Journal articles: 'Polymère de coordination'

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Ullah, Ihsan, Jong Won Shin, Ryuya Tokunaga, Shinya Hayami, Hye Jin Shin, and Kil Sik Min. "Anion-Dependent Cu(II) Coordination Polymers: Geometric, Magnetic and Luminescent Properties." Crystals 12, no. 8 (August 5, 2022): 1096. http://dx.doi.org/10.3390/cryst12081096.

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A one-dimensional (1D) coordination polymer [Cu2(bpba)(CH3COO)4] (1) and a two-dimensional (2D) coordination polymer [Cu(bpba)2(H2O)(NO3)](NO3)∙2H2O∙MeOH (2) were synthesized by the reaction between Cu(CH3COO)2∙H2O/Cu(NO3)2∙3H2O and bis(4-pyridyl)benzylamine (bpba). The Cu(II) ions of 1 and 2 have distorted-square pyramidal coordination with a paddle-wheel structure and an octahedral geometry, respectively. By coordinating the Cu(II) ions and bpba ligands, 1 and 2 formed zigzag 1D and puckered 2D coordination polymers, respectively. Polymer 1 exhibits strong emissions at 355 and 466 nm, whereas polymer 2 exhibits strong emissions only at 464 nm. The emissions are strongly dependent on the geometry of the Cu(II) ions linked by the bpba and anionic ligands. Polymer 1 exhibits a very strong antiferromagnetic interaction within the paddle-wheel dimer, whereas polymer 2 exhibits a very weak antiferromagnetic interaction through the bpba linkers and/or space.

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Thompson, Robert C. "Coordination polymers incorporating weakly coordinating fluoroanions." Journal of Fluorine Chemistry 71, no. 2 (April 1995): 191. http://dx.doi.org/10.1016/0022-1139(94)06019-i.

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Ewert, Ernest, Izabela Pospieszna-Markiewicz, Martyna Szymańska, Adrianna Kurkiewicz, Agnieszka Belter, Maciej Kubicki, Violetta Patroniak, Marta A. Fik-Jaskółka, and Giovanni N. Roviello. "New N4-Donor Ligands as Supramolecular Guests for DNA and RNA: Synthesis, Structural Characterization, In Silico, Spectrophotometric and Antimicrobial Studies." Molecules 28, no. 1 (January 3, 2023): 400. http://dx.doi.org/10.3390/molecules28010400.

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The present work reports the synthesis of new N4-donor compounds carrying p-xylyl spacers in their structure. Different Schiff base aliphatic N-donors were obtained synthetically and subsequently evaluated for their ability to interact with two models of nucleic acids: calf-thymus DNA (CT-DNA) and the RNA from yeast Saccharomyces cerevisiae (herein simply indicated as RNA). In more detail, by condensing p-xylylenediamine and a series of aldehydes, we obtained the following Schiff base ligands: 2-thiazolecarboxaldehyde (L1), pyridine-2-carboxaldehyde (L2), 5-methylisoxazole-3-carboxaldehyde (L3), 1-methyl-2-imidazolecarboxaldehyde (L4), and quinoline-2-carboxaldehyde (L5). The structural characterisation of the ligands L1-L5 (X-ray, 1H NMR, 13C NMR, elemental analysis) and of the coordination polymers {[CuL1]PF6}n (herein referred to as Polymer1) and {[AgL1]BF4}n, (herein referred to as Polymer2, X-ray, 1H NMR, ESI-MS) is herein described in detail. The single crystal X-ray structures of complexes Polymer1 and Polymer2 were also investigated, leading to the description of one-dimensional coordination polymers. The spectroscopic and in silico evaluation of the most promising compounds as DNA and RNA binders, as well as the study of the influence of the 1D supramolecular polymers Polymer1 and Polymer2 on the proliferation of Escherichia coli bacteria, were performed in view of their nucleic acid-modulating and antimicrobial applications. Spectroscopic measurements (UV–Vis) combined with molecular docking calculations suggest that the thiazolecarboxaldehyde derivative L1 is able to bind CT-DNA with a mechanism different from intercalation involving the thiazole ring in the molecular recognition and shows a binding affinity with DNA higher than RNA. Finally, Polymer2 was shown to slow down the proliferation of bacteria much more effectively than the free Ag(I) salt.

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Xia, Lingling, Qinyue Wang, and Ming Hu. "Recent advances in nanoarchitectures of monocrystalline coordination polymers through confined assembly." Beilstein Journal of Nanotechnology 13 (August 12, 2022): 763–77. http://dx.doi.org/10.3762/bjnano.13.67.

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Various kinds of monocrystalline coordination polymers are available thanks to the rapid development of related synthetic strategies. The intrinsic properties of coordination polymers have been carefully investigated on the basis of the available monocrystalline samples. Regarding the great potential of coordination polymers in various fields, it becomes important to tailor the properties of coordination polymers to meet practical requirements, which sometimes cannot be achieved through molecular/crystal engineering. Nanoarchitectonics offer unique opportunities to manipulate the properties of materials through integration of the monocrystalline building blocks with other components. Recently, nanoarchitectonics has started to play a significant role in the field of coordination polymers. In this short review, we summarize recent advances in nanoarchitectures based on monocrystalline coordination polymers that are formed through confined assembly. We first discuss the crystallization of coordination polymer single crystals inside confined liquid networks or on substrates through assembly of nodes and ligands. Then, we discuss assembly of preformed coordination polymer single crystals inside confined liquid networks or on substrates. In each part, we discuss the properties of the coordination polymer single crystals as well as their performance in energy, environmental, and biomedical applications.

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Gorduk, Semih, Hakan Yilmaz, and Omer Andac. "Cu(II) and Cd(II) coordination polymers derived from pyrazine-2,3-dicarboxylato and 1-vinylimidazole ligands: Synthesis, characterization and hydrogen storage capacities." Macedonian Journal of Chemistry and Chemical Engineering 38, no. 1 (May 21, 2019): 19. http://dx.doi.org/10.20450/mjcce.2019.1711.

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In this study, two new coordination polymers of Cu(II) and Cd(II) ions with pyrazine-2,3-dicarboxylic acid and 1-vinylimidazole were synthesized. The structures of these coordination polymers were characterized with elemental analysis, infrared spectroscopy, thermal analysis, powder X-ray diffraction, and magnetic susceptibility techniques. According to the results of the thermal analysis, the coordination polymers that contained water molecules decomposed below 100 °C, and the final products for both coordination polymers were the related metal oxides in an oxygen atmosphere. Powder X-ray diffraction analysis revealed that the coordination polymers were in the crystalline form. The hydrogen storage capacities and surface areas of the coordination polymers were also determined. The highest hydrogen storage capacities were measured as 296 ml/g for the Cu(II) coordination polymer and 330 ml/g for the Cd(II) coordination polymer at approximately 75 bar and 75 K.

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Marchenko, Roman D., Taisiya S. Sukhikh, Alexey A. Ryadun, and Andrei S. Potapov. "Synthesis, Crystal Structure, and Luminescence of Cadmium(II) and Silver(I) Coordination Polymers Based on 1,3-Bis(1,2,4-triazol-1-yl)adamantane." Molecules 26, no. 17 (September 5, 2021): 5400. http://dx.doi.org/10.3390/molecules26175400.

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Coordination polymers with a new rigid ligand 1,3-bis(1,2,4-triazol-1-yl)adamantane (L) were prepared by its reaction with cadmium(II) or silver(I) nitrates. Crystal structure of the coordination polymers was determined using single-crystal X-ray diffraction analysis. Silver formed two-dimensional coordination polymer [Ag(L)NO3]n, in which metal ions are linked by 1,3-bis(1,2,4-triazol-1-yl)adamantane ligands, coordinated by nitrogen atoms at positions 2 and 4 of 1,2,4-triazole rings. Layers of the coordination polymer consist of rare 18- and 30-membered {Ag2L2} and {Ag4L4} metallocycles. Cadmium(II) nitrate formed two kinds of one-dimensional coordination polymers depending on the metal-to-ligand ratio used in the synthesis. Coordination polymer [Cd(L)2(NO3)2]n was obtained in case of a 1:2 M:L ratio, while for M:L = 2:1 product {[Cd(L)(NO3)2(CH3OH)]·0.5CH3OH}n was isolated. All coordination polymers demonstrated ligand-centered emission near 450 nm upon excitation at 370 nm.

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Munshiyeva, M. K., F. B. Aliyeva, S. R. Mamedova, P. S. Safarova, M. M. Qasanova, and B. T. .Usubaliyev. "SUPRAMOLECULAR NANOSTRUCTURED COORDINATION POLYMER BASED ON A NICKEL COORDINATION COMPOUND WITH PYROMELLITIC ACID." Azerbaijan Chemical Journal, no. 2 (June 19, 2023): 163–68. http://dx.doi.org/10.32737/0005-2531-2023-2-163-168.

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{[Ni2C6H2(COO)4(H2O)4]·H2O2,5}n binuclear coordination compound with supramolecular structure has been synthesized. The composition and chemical structure of the coordination compound have been determined by the elemental, X-ray, IR spectroscopic and differential thermal analyzes. The unit cell parameters have been determined by identifying the diffraction pattern and the inferred schematic structure of the two-dimensional polymer layer of the coordination polymer, which is the building block for all the studied coordination compounds from this series, has been given. The layers are connected with each other and shifted relative to each other depending on the direction and strength of the hydrogen bonds; and this leads to a change in the parameters of the unit cells. Thus, two-dimensional polymer layers (2D) are transformed into a 3D supramolecular structure

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Tzeng, Biing-Chiau, and Hsien-Te Yeh. "Self-Assembly of a Cd²⁺Compound with 4-Pyridylthioacetic Acid: Structural and Luminescence Properties." Zeitschrift für Naturforschung B 59, no. 11-12 (December 1, 2004): 1320–24. http://dx.doi.org/10.1515/znb-2004-11-1251.

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Abstract An interesting 3-D supramolecular architecture has been constructed through O-H・・・O and S・・・S weak interactions based on a neutral 1-D coordination polymer, [Cd(pyta)2(H2O)]n (pyta = pyridylthiocarboxylate), by self-assembly of the Cd2+ion and Hpyta ligand. This supramolecular approach is achieved in combination of coordinative bonds, O-H・・・O and S・・・S interactions. The tetragonal unit of 1-D coordination polymers forms a 1-D channel structure with a dimension of 5.35×6.86 Å2in the solid state, leading to the formation of zeolite-like materials. In combination with the zeolitelike nature of the title compound as well as its luminescence behavior, it is expected to find useful applications in luminescence sensing for VOCs (volatile organic compounds).

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Kadir, M. A., and Christopher J. Sumby. "Synthesis, Characterization and Crystal Structure of Coordination Polymers Developed as Anion Receptor." Solid State Phenomena 273 (April 2018): 134–39. http://dx.doi.org/10.4028/www.scientific.net/ssp.273.134.

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Reaction of diamide ligand, namelyN,N’-2,6-bis (4-pyridylmethyl) pyridine dicarboxamide (L) with cadmium nitrate and cadmium perchlorate has given rise to the formation of two types coordination polymers. Compound (CP1-Cd) with formula molecule {[Cd (L)2(H2O)2](NO3)2·6H2O}nis a one-dimensional coordination polymer while compound (CP2-Cd), with formula molecule {[Cd (L)2(H2O)2](ClO4)2·31⁄2H2O.CH3OH}n, is a two dimensional coordination polymer. These coordination polymers were preparedviaslow evaporation methods and completely characterized by combination of solid state techniques such as Fourier Transform Infrared (FTIR) spectroscopy, elemental analysis and X-ray crystallography. This study revealed that coordination polymers derived fromN,N’-2,6-bis (4-pyridylmethyl) pyridine dicarboxamide can accommodate anions with different sizes, showing good potential as anion receptor.

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Nath, J. K. "Syntheses, Structural Insight and HirshFeld Surface Analysis of Two Heteroleptic Coordination Polymer of Cu(II)." Журнал структурной химии 64, no. 9 (2023): 116489. http://dx.doi.org/10.26902/jsc_id116489.

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Using a solvothermal method, we have synthesized two coordination polymers of Cu(II). One is a 1D polymer {[Cu(bpy)(NDC)(H 2 O)].2H 2 O} n (1, 1D) formed with 1,8-naphthalene dicarboxylic acid (H 2 NDC) and 2,2′ -bipyridine (bpy) as an auxiliary ligand, while the other is a 2D polymer {[Cu 3 (TMA)(Imd) 3 ].5H 2 O.2DMF} n (2, 2D) formed with trimellitic acid (H 3TMA) and imidazole (Imd) as an auxiliary ligand. Both coordination polymers 1 and 2 were formed through an in situ hydrolytic ring opening reaction of 1,8-naphthalic anhydride and trimelitic anhydride with bipyridine and imidazole ligands, respectively. The asymmetric unit of polymer 1 contains asymmetric η 1 binding mode (one of the carboxylate) linking distorted square-pyramidal [Cu(NDC)(bpy)(H 2 O)] 2+ coordination units. The syn-syn-η 1 :η 1 linear polymer conformation exist in the 1D coordination polymer with adjacent Cu…Cu distance is 6.849Å. A chain of cyclic tetrameric water clusters is present between the stacked layers of the 3D supramolecular structure. The formation of the 3D supramolecular structure is guided by various weak interactions such as OH…O, CH…O, CH…π and π…π interactions. The coordination polymers 2 forms 3D supramolecular architecture guided by various weak interactions such as OH…O, CH…O and NH…O interactions. The crystal structures of both coordination polymers have been determined using single crystal X-ray diffraction and their structural features are described.

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Patra, Ranjan, and Israel Goldberg. "A three-dimensional coordination polymer of 3-(3,5-dicarboxybenzyloxy)benzoic acid with zinc." Acta Crystallographica Section C Crystal Structure Communications 69, no. 8 (July 9, 2013): 819–21. http://dx.doi.org/10.1107/s0108270113017204.

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The synthesis is reported of the tricarboxylic acid 3-(3,5-dicarboxybenzyloxy)benzoic acid (H3L) and the product of its reaction under solvothermal conditions with ZnIIcations, namely poly[[μ6-3-(3,5-dicarboxylatobenzyloxy)benzoato](dimethylformamide)-μ3-hydroxido-dizinc(II)], [Zn2(C16H9O7)(OH)(C3H7NO)]n, the formation of which is associated with complete deprotonation of H3L. Its crystal structure consists of a single-framework coordination polymer of the organicL3−ligand with ZnIIcations in a 1:2 ratio, with additional hydroxide and dimethylformamide (DMF) ligands coordinated to the ZnIIcentres. The ZnIIcations are characterized by coordination numbers of 5 and 6, being bridged to each other by hydroxide ligands. In the polymeric framework, the carboxylate- and hydroxy-bridged ZnIIcations are arranged in coordination-tessellated columns, which propagate along theaaxis of the crystal structure, and eachL3−ligand links to seven different ZnIIcentresviaZn—O bonds of two different columns. The coordination framework, composed of [Zn2(L)(OH)(DMF)]nunits, forms an open architecture, the channel voids within it being filled by the zinc-coordinating DMF ligands. This report provides the first structural evidence for the formation of coordination polymers with H3L viamultiple metal–ligand bonds through its carboxylate groups.<!?tpb=21.5pt>

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Batten, Stuart R., Neil R. Champness, Xiao-Ming Chen, Javier Garcia-Martinez, Susumu Kitagawa, Lars Öhrström, Michael O’Keeffe, Myunghyun Paik Suh, and Jan Reedijk. "Terminology of metal–organic frameworks and coordination polymers (IUPAC Recommendations 2013)." Pure and Applied Chemistry 85, no. 8 (July 31, 2013): 1715–24. http://dx.doi.org/10.1351/pac-rec-12-11-20.

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A set of terms, definitions, and recommendations is provided for use in the classification of coordination polymers, networks, and metal–organic frameworks (MOFs). A hierarchical terminology is recommended in which the most general term is coordination polymer. Coordination networks are a subset of coordination polymers and MOFs a further subset of coordination networks. One of the criteria an MOF needs to fulfill is that it contains potential voids, but no physical measurements of porosity or other properties are demanded per se. The use of topology and topology descriptors to enhance the description of crystal structures of MOFs and 3D-coordination polymers is furthermore strongly recommended.

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Paoli, Paola, Eleonora Macedi, Patrizia Rossi, Luca Giorgi, Mauro Formica, and Vieri Fusi. "Crystal structure of the BaII-based CoII-containing one-dimensional coordination polymer poly[[aqua{μ4-2,2′-[(4,10-dimethyl-1,4,7,10-tetraazacyclododecane-1,7-diyl)bis(methylidene)]bis(4-oxo-4H-pyran-3-olato)}perchloratocobaltbarium] perchlorate]." Acta Crystallographica Section E Crystallographic Communications 73, no. 12 (November 3, 2017): 1806–11. http://dx.doi.org/10.1107/s2056989017015638.

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The title compound, {[Ba{Co(H-2L1)}(ClO4)(H2O)]ClO4}n,L1 =4,10-bis[(3-hydroxy-4-pyron-2-yl)methyl]-1,7-dimethyl-1,4,7,10-tetraazacyclododecane, is a one-dimensional coordination polymer. The asymmetric unit consists of a {Ba[Co(H–2L1)](ClO4)(H2O)}+cationic fragment and a non-coordinating ClO4−anion. In the neutral [Co(H–2L1)] moiety, the cobalt ion is hexacoordinated in a trigonal–prismatic fashion by the surrounding N4O2donor set. The Ba2+ion is nine-coordinated and exhibits a distorted [BaO9] monocapped square-antiprismatic geometry, the six oxygen atoms coming from three distinct [Co(H–2L1)] moieties, while the remaining three vertices are occupied by the oxygen atoms of a bidentate perchlorate anion and a water molecule. A barium–μ2-oxygen motif develops along theaaxis, connecting symmetry-related dinuclear BaII–CoIIcationic fragments in a wave-like chain, forming a one-dimensional metal coordination polymer. Non-coordinating ClO4−anions are located in the space between the chains. Weak C—H...O hydrogen bonds involving both coordinating and non-coordinating perchlorate anions build the whole crystal architecture. To our knowledge, this is the first example of a macrocyclic ligand forming a BaII-based one-dimensional coordination polymer, containing CoIIions surrounded by a N4O2donor set.

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Fang, Ming, and Bin Zhao. "Ln-Ag heterometallic coordination polymers." Reviews in Inorganic Chemistry 35, no. 2 (June 1, 2015): 81–113. http://dx.doi.org/10.1515/revic-2014-0009.

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AbstractThe last few years have seen an increasing interest in the study of lanthanide-silver (Ln-Ag) heterometallic coordination polymers due to their potential applications. It has led to intense activity of chemists to produce Ln-Ag heterometallic coordination polymers and investigate their properties. In this review, we summarize recent research development in the fascinating and challenging field of Ln-Ag heterometallic coordination polymers. This review covers 182 Ln-Ag heterometallic coordination polymers, which are categorized by the kind of ligand as N-heterocyclic carboxylate ligands and others. There are three categories of Ln-Ag coordination polymer based on N-heterocyclic carboxylate ligands: one dimensional (1D), 2D, and 3D. The 3D part was divided into Ln-Ag coordination polymers based on pyridine carboxylate ligands and other N-heterocyclic carboxylate ligands. This perspective illustrates the coordination features of compounds constructed by N-heterocyclic carboxylate ligands. Luminescent properties are also discussed.

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Manna, Paulami, Bharat Kumar Tripuramallu, Suresh Bommakanti, and Samar K. Das. "Synthesis, characterization and magnetism of metal–organic compounds: role of the positions of the coordinating groups of a meso-flexible ligand in placing anisotropy to exhibit spin-canting behaviour." Dalton Transactions 44, no. 6 (2015): 2852–64. http://dx.doi.org/10.1039/c4dt03468f.

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Karmakar, Anirban, Anup Paul, Elia Pantanetti Sabatini, M. Fátima C. Guedes da Silva, and Armando J. L. Pombeiro. "Pyrene Carboxylate Ligand Based Coordination Polymers for Microwave-Assisted Solvent-Free Cyanosilylation of Aldehydes." Molecules 26, no. 4 (February 19, 2021): 1101. http://dx.doi.org/10.3390/molecules26041101.

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The new coordination polymers (CPs) [Zn(μ-1κO1:1κO2-L)(H2O)2]n·n(H2O) (1) and [Cd(μ4-1κO1O2:2κN:3,4κO3-L)(H2O)]n·n(H2O) (2) are reported, being prepared by the solvothermal reactions of 5-{(pyren-4-ylmethyl)amino}isophthalic acid (H2L) with Zn(NO3)2.6H2O or Cd(NO3)2.4H2O, respectively. They were synthesized in a basic ethanolic medium or a DMF:H2O mixture, respectively. These compounds were characterized by single-crystal X-ray diffraction, FTIR spectroscopy, thermogravimetric and elemental analysis. The single-crystal X-ray diffraction analysis revealed that compound 1 is a one dimensional linear coordination polymer, whereas 2 presents a two dimensional network. In both compounds, the coordinating ligand (L2−) is twisted due to the rotation of the pyrene ring around the CH2-NH bond. In compound 1, the Zn(II) metal ion has a tetrahedral geometry, whereas, in 2, the dinuclear [Cd2(COO)2] moiety acts as a secondary building unit and the Cd(II) ion possesses a distorted octahedral geometry. Recently, several CPs have been explored for the cyanosilylation reaction under conventional conditions, but microwave-assisted cyanosilylation of aldehydes catalyzed by CPs has not yet been well studied. Thus, we have tested the solvent-free microwave-assisted cyanosilylation reactions of different aldehydes, with trimethylsilyl cyanide, using our synthesized compounds, which behave as highly active heterogeneous catalysts. The coordination polymer 1 is more effective than 2, conceivably due to the higher Lewis acidity of the Zn(II) than the Cd(II) center and to a higher accessibility of the metal centers in the former framework. We have also checked the heterogeneity and recyclability of these coordination polymers, showing that they remain active at least after four recyclings.

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SHOOTO, NTAOTE DAVID. "A Convenient Synthesis of Antimony Nanorods using 1,2,4,5-Benzenetetracarboxylic Acid." Asian Journal of Chemistry 31, no. 6 (April 29, 2019): 1301–4. http://dx.doi.org/10.14233/ajchem.2019.21886.

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1,2,4,5-Benzenetetracarboxylic acid (H4Btec) is an ideal candidate for the synthesis of new coordination polymers compounds because of its four carboxyl groups bridging moieties with antimony ions having distorted coordination configuration. This work reports a new compound of coordination polymer, namely, [Sb2(C4H4O6)2(Btec)(H2O)]n, [(C4H4O6)2 = tartrate and Btec4− = 1,2,4,5-benzenetetracarboxylic anion] has been synthesized under reflux. The physical and chemical properties of coordination polymers; Sb2(C4H4O6)2(Btec)(H2O) was affirmed by scanning electron microscope, Fourier transform infrared spectroscopy, X-ray powder diffraction, thermogravimetric analyses and photoluminescence spectroscopy.

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Al-Matarneh, Maria Cristina, Alina Nicolescu, Ioan-Andrei Dascalu, Sergiu Shova, Cristian-Dragos Varganici, Adrian Fifere, Ramona Danac, and Ioana-Cristina Marinas. "Synthesis of New Zinc and Copper Coordination Polymers Derived from Bis (Triazole) Ligands." Crystals 14, no. 2 (January 30, 2024): 144. http://dx.doi.org/10.3390/cryst14020144.

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Recent research has focused on molecules with different aromatic nitrogen-containing moieties coupled to a biphenyl core, as an effective approach for the assembly of coordination polymers. This study presents the synthesis and characterization of new ligands based on 1,1′-(3,3′-dimethoxy-[1,1′-biphenyl]-4,4′-diyl)bis(4-butyl-1H-1,2,3-triazole) (L1) and 1,1′-(3,3′-dimethoxy-[1,1′-biphenyl]-4,4′-diyl)bis(4-phenyl-1H-1,2,3-triazole) (L2) and their coordination polymers with Cu(II) and Zn(II). An unexpected coordination polymer with Cu(I) starting from Cu(II) was obtained in the case of the L2 ligand. The ligands and metal complexes underwent thorough characterization, including X-ray diffraction, NMR-, FTIR-, MS-spectrometry, and EPR, XPS, and TG-DTG analyses. While the ligand L2 generated a linear Cu(I) polymer, the ligand L1 formed a zigzag polymer with both copper and zinc.

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Wang, Yan-Ning, Ping Zhang, Jie-Hui Yu, and Ji-Qing Xu. "4-(4-Carboxyphenoxy)phthalate-based coordination polymers and their application in sensing nitrobenzene." Dalton Transactions 44, no. 4 (2015): 1655–63. http://dx.doi.org/10.1039/c4dt02762k.

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Structural characterization of 4-(4-carboxyphenoxy)phthalate-based Cd²⁺ and Mn²⁺ coordination polymers are reported, and Cd²⁺ coordination polymer can serve as probe to sense nitrobenzene.

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Shao, Zhi-Chao, Xiang-Ru Meng, and Hong-Wei Hou. "Two new CdII and ZnII coordination polymers incorporating 1-aminobenzene-3,4,5-tricarboxylic acid: synthesis, crystal structure and characterization." Acta Crystallographica Section C Structural Chemistry 75, no. 8 (July 5, 2019): 1065–72. http://dx.doi.org/10.1107/s2053229619009227.

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Aminobenzoic acid derivatives are widely used in the preparation of new coordination polymers since they contain O-atom donors, as well as N-atom donors, and have a rich variety of coordination modes which can lead to polymers with intriguing structures and interesting properties. Two new coordination polymers incorporating 1-aminobenzene-3,4,5-tricarboxylic acid (H3abtc), namely, poly[(μ3-1-amino-5-carboxybenzene-3,4-dicarboxylato)diaquacadmium(II)], [Cd(C9H5NO6)(H2O)2] n , (I), and poly[[bis(μ5-1-aminobenzene-3,4,5-tricarboxylato)triaquatrizinc(II)] dihydrate], {[Zn3(C9H4NO6)2(H2O)3]·2H2O} n , (II), have been prepared and structurally characterized by single-crystal X-ray diffraction. In polymer (I), each tridentate 1-amino-5-carboxybenzene-3,4-dicarboxylate (Habtc2−) ligand coordinates to three CdII ions to form a two-dimensional network structure, in which all of the CdII ions and Habtc2− ligands are equivalent, respectively. Polymer (II) also exhibits a two-dimensional network structure, in which three crystallographically independent ZnII ions are bridged by two crystallographically independent pentadentate 1-aminobenzene-3,4,5-tricarboxylate (abtc3−) ligands. This indicates that changing the metal ion can influence the coordination mode of the H3abtc-derived ligand and further influence the detailed architecture of the polymer. Moreover, the IR spectra, thermogravimetric analyses and fluorescence properties were investigated.

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Dang, Ming-An, Zi-Feng Li, Ying Liu, and Gang Li. "Three Coordination Polymers Built by Methoxyphenyl Imidazole Dicarboxylate: Solvothermal Syntheses, Crystal Structures, and Properties." Australian Journal of Chemistry 68, no. 6 (2015): 956. http://dx.doi.org/10.1071/ch14159.

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Three coordination polymers [Sr(p-H2MOPhIDC)2]n (1) (p-H3MOPhIDC = 2-p-methoxyphenyl-1H-imidazole-4,5-dicarboxylic acid), {[Cd2(p-HMOPhIDC)2(4,4′-bipy)]⋅H2O}n (4,4′-bipy = 4,4′-bipyridine) (2), and [Zn(p-HMOPhIDC)(4,4′-bipy)]n (3) have been solvothermally synthesized, and structurally characterized by single-crystal X-ray diffraction. Polymer 1 indicates a three-dimensional framework, which can be simplified as a 6-connected lattice. Polymer 2 is also a three-dimensional framework, and contains mixed bridging ligands HMOPhIDC2– and 4,4′-bipy. Polymer 3 exhibits a sheet structure bearing infinite rectangles. The coordination modes of the p-H3MOPhIDC ligand, and the thermal and solid-state photoluminescence properties of the polymers have been investigated as well.

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Vakhneev, S. N., and Yan Naing Min. "Investigation of Adsorption Capacity of Metal-Organic Polymers." International Journal of Circuits, Systems and Signal Processing 15 (September 14, 2021): 1443–49. http://dx.doi.org/10.46300/9106.2021.15.156.

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In this work, we studied a biocompatible hybrid material based on iron (III) and muconic acid oxoclusters. It has been shown that coordination polymers are a promising class as functional materials for various purposes (as sorbents, catalysts, conductors, storage materials, etc.). The adsorption capacity of the obtained adsorbent for removing dyes from the prepared solution was in the following order: CR> MB> MV. From the results of the study, we can conclude that the dye Congo red is best suited for adsorption by the coordination polymer. The maximum absorption of the dye on organometallic coordination polymers occurs in the pH range 5 - 7 with adsorption of ~ 90%, which is important for the potential practical application of such coordination polymers as carriers for drug delivery.

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Shekurov, Ruslan P., Mikhail N. Khrizanforov, Ilya A. Bezkishko, Kamil A. Ivshin, Almaz A. Zagidullin, Anna A. Lazareva, Olga N. Kataeva, and Vasili A. Miluykov. "Influence of the Substituent’s Size in the Phosphinate Group on the Conformational Possibilities of Ferrocenylbisphosphinic Acids in the Design of Coordination Polymers and Metal–Organic Frameworks." International Journal of Molecular Sciences 24, no. 18 (September 14, 2023): 14087. http://dx.doi.org/10.3390/ijms241814087.

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This paper illustrates how the size and type of substituent R in the phosphinate group of ferrocenyl bisphosphinic acids can affect conformational possibilities and coordination packing. It also demonstrates that H-phosphinate plays a key role in variational mobility, while Me- or Ph- substituents of the phosphinate group can only lead to 0D complexes or 1D coordination polymer. Overall, this paper provides valuable insights into the design and construction of coordination polymers based on ferrocene-contained linkers. It sheds light on how different reaction conditions and substituents can affect conformational possibilities and coordination packing, which could have significant implications for developing new polymers with unique properties.

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24

Lamberts, Kevin, and Ulli Englert. "Crystal structures of coordination polymers from CaI2and proline." Acta Crystallographica Section E Crystallographic Communications 71, no. 6 (May 23, 2015): 675–80. http://dx.doi.org/10.1107/s2056989015009597.

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Completing our reports concerning the reaction products from calcium halides and the amino acid proline, two different solids were found for the reaction of L- and DL-proline with CaI2. The enantiopure amino acid yields the one-dimensional coordination polymercatena-poly[[aqua-μ3-L-proline-tetra-μ2-L-proline-dicalcium] tetraiodide 1.7-hydrate], {[Ca2(C5H9NO2)5(H2O)]I4·1.7H2O}n, (1), with two independent Ca2+cations in characteristic seven- and eightfold coordination. Five symmetry-independent zwitterionic L-proline molecules bridge the metal sites into a cationic polymer. Racemic proline forms with Ca2+cations heterochiral chains of the one-dimensional polymercatena-poly[[diaquadi-μ2-DL-proline-calcium] diiodide], {[Ca(C5H9NO2)2(H2O)2]I2}n, (2). The centrosymmetric structure is built by one Ca2+cation that is bridged towards its symmetry equivalents by two zwitterionic proline molecules. In both structures, the iodide ions remain non-coordinating and hydrogen bonds are formed between these counter-anions, the amino groups, coordinating and co-crystallized water molecules. While the overall composition of (1) and (2) is in line with other structures from calcium halides and amino acids, the diversity of the carboxylate coordination geometry is quite surprising.

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25

Wang, Yong-Tao, Gui-Mei Tang, and Da-Wei Qin. "Metal-Controlled Assembly Tuning Coordination Polymers with Flexible 2-(1H-imidazole-1-yl)acetic Acid (Hima)." Australian Journal of Chemistry 59, no. 9 (2006): 647. http://dx.doi.org/10.1071/ch06183.

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Three new inorganic–organic coordination polymers based on a versatile linking unit 2-(1H-imidazole-1-yl)acetate (Hima) and divalent Mn(ii), Ni(ii), and Cu(ii) ions, exhibiting two kinds of two dimensionalities with different topological structures, have been prepared in water medium and structurally characterized by single-crystal X-ray diffraction analysis. Reaction of MnCl2·4H2O and Ni(NO3)2·6H2O with Hima yielded neutral two-dimensional (2D) coordination polymers [M(ima)2]n, M = Mn(ii) 1, and Ni(ii) 2 with isostructural 2D coordination polymers possessing (3,6) topology structures, which further stack into three-dimensional (3D) supramolecular networks through C–H···O weak interactions. However, when Cu(NO3)2·4H2O was used, a neutral 2D coordination polymer [Cu(ima)2]n 3 consisting of rhombus units was generated, which showed a 3D supramolecular network through C–H···O weak interactions. Among these polymers, the building block ima anion exhibits different coordination modes. These results indicate that the versatile nature of this flexible ligand, together with the coordination preferences of the metal ions, plays a critical role in construction of these novel coordination polymers. Spectral and thermal properties of these new materials have also been investigated.

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26

Liu, Guo-Cheng, Zhi-Chao Guo, Xiu-Li Wang, Yun Qu, Song Yang, and Hong-Yan Lin. "Tuning 1-D Pb(II) Coordination Polymers by Flexible and Semirigid Dicarboxylates: Synthesis, Structure and Properties." Zeitschrift für Naturforschung B 67, no. 3 (March 1, 2012): 185–91. http://dx.doi.org/10.1515/znb-2012-0301.

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Two new one-dimensional (1-D) Pb(II) coordination polymers, namely, [Pb(3-pdip)(L1)]·H2O (1) and [Pb(3-pdip)(L2)] (2) [L1H2 = 1,6-hexanedioic acid, L2H2 = homophthalic acid, 3-pdip = 2-(3-pyridyl)imidazo[4,5-f]1,10-phenanthroline] have been obtained from hydrothermal reactions of Pb(II) nitrate with the phenanthroline derivative and the two dicarboxylic acids. Single-crystal X-ray diffraction analysis reveals that compound 1 is a staircase-like double-chain coordination polymer constructed from binuclear [Pb2N4O8] subunits and pairs of [L1]2− anions. Compound 2 is a linear coordination polymer connected via two μ2-η2:η1 carboxylate groups from [L2]2− anions. Furthermore, adjacent chains of 1 and 2 are extended into 3-D supramolecular networks by hydrogen bonds and π-π stacking interactions. The organic carboxylic acids with different flexibility determine the structures of the coordination polymers. Moreover, the thermal stabilities and photoluminescence properties of compounds 1 and 2 were investigated.

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27

Nikovskiy, Igor A., Pavel V. Dorovatovskii, Valentin V. Novikov, and Yulia V. Nelyubina. "Bis(2,6-pyrazolyl)pyridines as a New Scaffold for Coordination Polymers." Molecules 28, no. 11 (May 23, 2023): 4275. http://dx.doi.org/10.3390/molecules28114275.

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Two coordination polymers, Fe(LOBF3)(CH3COO)(CH3CN)2]n•nCH3CN and [Fe(LO−)2AgNO3BF4•CH3OH]n•1.75nCH3OH•nH2O (LO− = 3,3′-(4-(4-cyanophenyl)pyridine-2,6-diyl)bis(1-(2,6-dichlorophenyl)-1H-pyrazol-5-olate)), were obtained via a PCET-assisted process that uses the hydroxy-pyrazolyl moiety of the ligand and the iron(II) ion as sources of proton and electron, respectively. Our attempts to produce heterometallic compounds under mild conditions of reactant diffusion resulted in the first coordination polymer of 2,6-bis(pyrazol-3-yl)pyridines to retain the core N3(L)MN3(L). Under harsh solvothermal conditions, a hydrogen atom transfer to the tetrafluoroborate anion caused the transformation of the hydroxyl groups into OBF3 in the third coordination polymer of 2,6-bis(pyrazol-3-yl)pyridines. This PCET-assisted approach may be applicable to produce coordination polymers and metal–organic frameworks with the SCO-active core N3(L)MN3(L) formed by pyrazolone- and other hydroxy-pyridine-based ligands.

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28

Shekurov, Ruslan P., Mikhail N. Khrizanforov, Almaz A. Zagidullin, Almaz L. Zinnatullin, Kirill V. Kholin, Kamil A. Ivshin, Tatiana P. Gerasimova, et al. "The Phosphinate Group in the Formation of 2D Coordination Polymer with Sm(III) Nodes: X-ray Structural, Electrochemical, and Mössbauer Study." International Journal of Molecular Sciences 23, no. 24 (December 8, 2022): 15569. http://dx.doi.org/10.3390/ijms232415569.

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A coordination polymer has been synthesized using ferrocene-based ligand-bearing phosphinic groups of 1,1′-ferrocene-diyl-bis(H-phosphinic acid)), and samarium (III). The coordination polymer’s structure was studied by both single-crystal and powder XRD, TG, IR, and Raman analyses. For the first time, the Mössbauer effect studies were performed on ferrocenyl phosphinate and the polymer based on it. Additionally, the obtained polymer was studied by the method of cyclic and differential pulse voltammetry. It is shown that it has the most positive potential known among ferrocenyl phosphinate-based coordination polymers and metal–organic frameworks. Using the values of the oxidation potential, the polymer was oxidized and the ESR method verified the oxidized Fe(III) form in the solid state. Additionally, the effect of the size of the phosphorus atom substituent of the phosphinate group on the dimension of the resulting coordination compounds is shown.

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29

Luisi, Brian S., Kevin D. Rowland, and Brian Moulton. "Coordination polymer gels: synthesis, structure and mechanical properties of amorphous coordination polymers." Chemical Communications, no. 27 (2007): 2802. http://dx.doi.org/10.1039/b703768f.

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30

Wang, Bin, Margot Jacquet, Kunzhou Wang, Kun Xiong, Minhao Yan, Jérémie Courtois, and Guy Royal. "pH-Induced fragmentation of colloids based on responsive self-assembled copper(ii) metallopolymers." New Journal of Chemistry 42, no. 10 (2018): 7823–29. http://dx.doi.org/10.1039/c7nj05100j.

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31

Burrow, Robert, and Giancarlo Belmonte. "Coordination polymers of benzenediseleninate, the seleno analog of terephthalate." Acta Crystallographica Section A Foundations and Advances 70, a1 (August 5, 2014): C1235. http://dx.doi.org/10.1107/s2053273314087646.

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The proligand para-benzenediseleninic acid, (HO2SeC6H4SeO2H) (Figure), is the seleno analog to the commonly used MOF spacer proligand, terephthalic acid. Novel coordination polymers based on this proligand, and Mn(II), Fe(II), Co(II), Ni(II), Cu(II) or Zn(II) metal centers containing auxiliary water molecules, [M(O2SeC6H4SeO2)2(H2O)n], were synthesized. Depending on the reaction conditions, different pure or mixed phases can be produced. Crystal to crystal transformations of the novel coordination polymers were studied with powder X ray diffraction, infrared spectral analysis and thermal gravimetric analysis. These coordination polymers can be dehydrated with subsequent formation of new anhydrous coordination polymer phases. Some of these phases can be rehydrated to lead back to the crystalline starting materials or to new crystalline hydrated phases. We are working on the complete structural characterization of the phases.

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32

Głuchowska, Halina, Renata Łyszczek, Liliana Mazur, and Alexander M. Kirillov. "Structural and Thermal Investigations of Co(II) and Ni(II) Coordination Polymers Based on biphenyl-4,4′-dioxydiacetate Linker." Materials 14, no. 13 (June 25, 2021): 3545. http://dx.doi.org/10.3390/ma14133545.

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Two coordination polymers, [Co(µ4-L)(H2O)2]n (1) and [Ni(µ-L)(H2O)4]n (2), were solvothermally assembled from the corresponding metal(II) chlorides and biphenyl-4,4-dioxydiacetic acid (H2L) as a flexible dicarboxylate linker. The cobalt(II) compound 1 featured a layer-pillared 3D metal-organic network with a cds topology, while the nickel(II) derivative 2 represented a linear chain 1D coordination polymer with a 2C1 topology. The µ4− and µ-L2− linkers exhibited different denticity and coordination modes in the synthesized compounds, thus contributing to their structural diversity. The dimensionality of 1 and 2 had an influence on their thermal stability and decomposition processes, which were investigated in detail by TG-DSC and TG-FTIR methods. Thermal decomposition products of coordination polymers were also analyzed by PXRD, confirming the formation of Co3O4/CoO and NiO as final materials. The obtained compounds broaden a family of coordination polymers assembled from flexible dicarboxylate linkers.

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33

Fromm, Katharina M., Jorge L. Sagué, and Laurent Mirolo. "Coordination Polymer Networks: An Alternative to Classical Polymers?" Macromolecular Symposia 291-292, no. 1 (June 8, 2010): 75–83. http://dx.doi.org/10.1002/masy.201050509.

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34

Yuan, C., J. Chen, S. Yu, Y. Chang, J. Mao, Y. Xu, W. Luo, B. Zeng, and L. Dai. "Protein-responsive assemblies from catechol–metal ion supramolecular coordination." Soft Matter 11, no. 11 (2015): 2243–50. http://dx.doi.org/10.1039/c4sm02528h.

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A synergistic strategy combining the driving forces of both catechol–metal ion coordination and polymer self-assembly can organize polymers into hybrid nanoassemblies with tunable morphologies and protein-triggered disassembly features.

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35

Voisin, H., C. Aimé, A. Vallée, A. Bleuzen, M. Schmutz, G. Mosser, T. Coradin, and C. Roux. "Preserving the spin transition properties of iron-triazole coordination polymers within silica-based nanocomposites." Journal of Materials Chemistry C 5, no. 44 (2017): 11542–50. http://dx.doi.org/10.1039/c7tc04194b.

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36

Li, Xiangyu, Lishuai Zong, Weijie Li, Yibo Wang, Jinyan Wang, and Xigao Jian. "Synthesis and Characterization of Schiff Base Polymers via Metal Coordination and Its Application in Infrared Stealth Coating." Polymers 14, no. 21 (October 27, 2022): 4563. http://dx.doi.org/10.3390/polym14214563.

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In order to reduce the infrared emissivity to meet the requirements of modern warfare for infrared stealth materials, we prepared the polymers containing Schiff base moieties using polyetheramine and 2,6-pyridinedicarboxaldehyde by solution polycondensation and coordinated with Ni2+, Cu2+, and Sm3+ ions to prepare organic coatings. The structure and the thermal and mechanical properties of the coatings were studied in detail. Meanwhile, the effect of the conductivity change of coordination polymers on infrared emissivity was studied systematically. The results showed the polymer coordinated with Sm3+ ions had the lowest energy band gap, which was 2.99 eV, and the best electrical conductivity of 3.54 × 10−4 S/cm compared with Ni2+ and Cu2+ coordination polymers. The infrared emissivity was the lowest in the 2–22 μm infrared waveband range, which reached 0.58, suggesting the polymers containing Schiff base moieties and their coordination polymers may have a great potential to be applied as infrared stealth materials in military applications.

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37

Gardner, Heather C., Alan R. Kennedy, Karen M. McCarney, Edward Staunton, Heather Stewart, and Simon J. Teat. "Structures of five salt forms of disulfonated monoazo dyes." Acta Crystallographica Section C Structural Chemistry 76, no. 10 (September 23, 2020): 972–81. http://dx.doi.org/10.1107/s2053229620012735.

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The structures of five s-block metal salt forms of three disulfonated monoazo dyes are presented. These are poly[di-μ-aqua-diaqua[μ4-3,3′-(diazane-1,2-diyl)bis(benzenesulfonato)]disodium(I)], [Na2(C12H8N2O6S2)(H2O)4] n , (I), catena-poly[[tetraaquacalcium(II)]-μ-3,3′-(diazane-1,2-diyl)bis(benzenesulfonato)], [Ca(C12H8N2O6S2)(H2O)4] n , (II), catena-poly[[[diaquacalcium(II)]-μ-2-(4-amino-3-sulfonatophenyl)-1-(4-sulfonatophenyl)diazenium] dihydrate], {[Na(C12H10N3O6S2)(H2O)2]·2H2O} n , (III), hexaaquamagnesium bis[2-(4-amino-3-sulfonatophenyl)-1-(4-sulfonatophenyl)diazenium] octahydrate, [Mg(H2O)6](C12H10N3O6S2)2·8H2O, (IV), and poly[[{μ2-4-[2-(4-amino-2-methyl-5-methoxyphenyl)diazen-1-yl]benzene-1,3-disulfonato}di-μ-aqua-diaquabarium(II)] dihydrate], {[Ba(C14H13N3O7S2)(H2O)4]·2H2O} n , (V). Compound (III) is that obtained on crystallizing the commercial dyestuff Acid Yellow 9 [74543-21-8]. The Mg species is a solvent-separated ion-pair structure and the others are all coordination polymers with bonds from the metal atoms to sulfonate groups. Compound (I) is a three-dimensional coordination polymer, (V) is a two-dimensional coordination polymer and both (II) and (III) are one-dimensional coordination polymers. The coordination behaviour of the azo ligands and the water ligands, the dimensionality of the coordination polymers and the overall packing motifs of these five structures are contrasted to those of monosulfonate monoazo congers. It is found that (I) and (II) adopt similar structural types to those of monosulfonate species but that the other three structures do not.

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38

Assoumatine, Tokouré, and Helen Stoeckli-Evans. "Crystal structures of [(μ2-L1)dibromidodicopper(II)] dibromide and poly[[(μ2-L1)diiodidodicopper(I)]-di-μ-iodido-dicopper(I)], where L1 is 2,5,8,11,14,17-hexathia-[9.9](2,6,3,5)-pyrazinophane." Acta Crystallographica Section E Crystallographic Communications 76, no. 7 (June 2, 2020): 984–89. http://dx.doi.org/10.1107/s2056989020007161.

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The reaction of the hexathiapyrazinophane ligand, 2,5,8,11,14,17-hexathia-[9.9](2,6,3,5)-pyrazinophane (L1), with copper(II) dibromide led to the formation of a binuclear complex, [μ2-2,5,8,11,14,17-hexathia-[9.9](2,6,3,5)-pyrazinophane]bis[bromidocopper(II)] dibromide, [Cu2Br2(C16H24N2S6)]Br2, (I). The complex possesses inversion symmetry with the pyrazine ring being situated about a center of symmetry. The ligand coordinates to the copper(II) atom in a bis-tetradentate manner and the copper atom has a fivefold NS3Br coordination environment with a distorted shape. The reaction of ligand L1 with copper(I) iodide also gave a binuclear complex, which is bridged by a Cu2I2 unit to form a two-dimensional coordination polymer, poly[[μ2-2,5,8,11,14,17-hexathia-[9.9](2,6,3,5)-pyrazinophane]tetra-μ-iodido-tetracopper(I)], [Cu4I4(C16H24N2S6)] n , (II). The binuclear unit possesses inversion symmetry with the pyrazine ring being located about a center of symmetry. The Cu2I2 unit is also located about an inversion center. The two independent copper(I) atoms are both fourfold coordinate. That coordinating to the ligand L1 in a bis-tridentate manner has an NS2I coordination environment and an irregular shape, while the second copper(I) atom, where L1 coordinates in a bis-monodentate manner, has an SI3 coordination environment with an almost perfect tetrahedral geometry. In the crystal of I, the cations and Br− anions are linked by a number of C—H...S and C—H...Br hydrogen bonds, forming a supramolecular network. In the crystal of II, the two-dimensional coordination polymers lie parallel to the ab plane and there are no significant inter-layer contacts present.

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39

Trofimova, Olesya Y., Arina V. Maleeva, Irina V. Ershova, Anton V. Cherkasov, Georgy K. Fukin, Rinat R. Aysin, Konstantin A. Kovalenko, and Alexandr V. Piskunov. "Heteroleptic LaIII Anilate/Dicarboxylate Based Neutral 3D-Coordination Polymers." Molecules 26, no. 9 (April 24, 2021): 2486. http://dx.doi.org/10.3390/molecules26092486.

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Three new 3D metal–organic frameworks of lanthanum based on mixed anionic ligands, [(La2(pQ)2(BDC)4)·4DMF]n, [(La2(pQ)2(DHBDC)4)·4DMF]n, [(La2(CA)2(BDC)4)·4DMF]n (pQ—dianion of 2,5-dihydroxy-3,6-di-tert-butyl-para-quinone, CA—dianion of chloranilic acid, BDC-1,4-benzenedicarboxylate, DHBDC-2,5-dihydroxy-1,4-benzenedicarboxylate and DMF-N,N′-dimethylformamide), were synthesized using solvothermal methodology. Coordination polymers demonstrate the rare xah or 4,6T187 topology of a 3D framework. The homoleptic 2D-coordination polymer [(La2(pQ)3)·4DMF]n was obtained as a by-product in the course of synthetic procedure optimization. The thermal stability, spectral characteristics and porosity of coordination polymers were investigated.

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40

Rajan, Siji, F. Richard Keene, and Peter J. Steel. "Metallosupramolecular Chemistry of AgI Complexes with Azobis(2-pyridine) and its Derivatives." Australian Journal of Chemistry 69, no. 6 (2016): 612. http://dx.doi.org/10.1071/ch15560.

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Reactions of three azobis(2-pyridines) with silver salts lead to 1D coordination polymers whose structures have been determined by single crystal X-ray crystallography. The azobis(2-pyridines) consistently act as di-bidentate ligands that bridge silver atoms separated by distances ranging from 5.49 to 5.82 Å. Two of the coordination polymers consist of chains in which consecutive bridging ligands are orthogonally oriented. The other polymer has a considerably more complicated structure due to the more intimate involvement of the trifluoroacetate counteranions, which also act as bridges between silver centres.

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41

Riba-Moliner, Marta, Cristina Oliveras-González, David B. Amabilino, and Arántzazu González-Campo. "Supramolecular block copolymers incorporating chiral and achiral chromophores for the bottom-up assembly of nanomaterials." Journal of Porphyrins and Phthalocyanines 23, no. 07n08 (July 2019): 916–29. http://dx.doi.org/10.1142/s1088424619500809.

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The coordination of the chiral metalloporphyrin ([5,10,15,20-[4-([Formula: see text]-2-[Formula: see text]-octadecylamidoethyloxiphenyl]porphyrin] zinc (II)) and an achiral homologue to an amphiphilic block copolymer of poly(styrene-[Formula: see text]-4-vinyl pyridine) (PS-[Formula: see text]-P4VP) have been studied in solution and as cast material. The resulting chiral dye-polymer hybrid material has been accomplished via axial coordination between the zinc (II) metal ion in the core of the porphyrin ring and the pyridyl units of the block-copolymer in a non-coordinative solvent. The supramolecular organization and possible chirality transfer to the hybrid material have been studied in solution by UV-visible absorption spectroscopy, fluorescence spectroscopy, Nuclear Magnetic Resonance and Circular Dichroism. The morphology of the chiral and achiral doped polymers has been studied in solid state by Transmission Electron Microscopy and Atomic Force Microscopy. We show that the nanostructures formed depend greatly upon the nature of the side-chains on the porphyrins, where a chiral group leads to a very homogeneous phase-separated material, perhaps indicating that chiral side groups are useful for the preparation of this type of supramolecular hybrid.

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42

Diana, Eliano, Giuliana Gervasio, Emanuele Priola, and Elisabetta Bonometti. "A new heterometallic multiligand 3D coordination polymer: synthesis and structure of [Pb(OH)]n[Ag(SCN)(CN)]n." CrystEngComm 16, no. 43 (2014): 10040–45. http://dx.doi.org/10.1039/c4ce01424c.

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43

Liu, Yan-Ju, Di Cheng, Ya-Xue Li, Xiang-Ru Meng, and Huai-Xia Yang. "A new two-dimensional managnese(II) coordination polymer constructed by 2,2′-(1,2-phenylene)bis(1H-imidazole-4,5-dicarboxylate)." Acta Crystallographica Section C Structural Chemistry 74, no. 5 (April 18, 2018): 599–603. http://dx.doi.org/10.1107/s2053229618005508.

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In recent years, N-heterocyclic carboxylate ligands have attracted much interest in the preparation of new coordination polymers since they contain N-atom donors, as well as O-atom donors, and have a rich variety of coordination modes which can lead to polymers with intriguing structures and interesting properties. A new two-dimensional coordination polymer, namely poly[[μ3-2,2′-(1,2-phenylene)bis(4-carboxy-1H-imidazole-5-carboxylato)-κ6 O 4,N 3,N 3′,O 4′:O 5:O 5′]manganese(II)], [Mn(C16H8N4O8)] n or [Mn(H4Phbidc)] n , has been synthesized by the reaction of Mn(OAc)2·4H2O (OAc is acetate) with 2,2′-(1,2-phenylene)bis(1H-imidazole-4,5-dicarboxylic acid) (H6Phbidc) under solvothermal conditions. In the polymer, each MnII ion is six-coordinated by two N atoms from one H4Phbidc2− ligand and by four O atoms from three H4Phbidc2− ligands, forming a significantly distorted octahedral MnN2O4 coordination geometry. The MnII ions are linked by hexadentate H4Phbidc2− ligands, leading to a two-dimensional structure parallel to the ac plane. In the crystal, adjacent layers are further connected by N—H...O hydrogen bonds, forming a three-dimensional structure in the solid state.

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44

Simões, Andrea B., Flávio Figueira, Ricardo F. Mendes, Jéssica S. Barbosa, João Rocha, and Filipe A. Almeida Paz. "One-dimensional ladder gallium coordination polymer." Acta Crystallographica Section E Crystallographic Communications 75, no. 11 (October 3, 2019): 1607–12. http://dx.doi.org/10.1107/s2056989019013446.

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A one-dimensional ladder-type coordination polymer, poly[[(μ2-hydroxido)(μ2-1H-pyrazole-3,5-dicarboxylato)gallium(III)] monohydrate], [Ga(C5H2N2O4)(OH)(H2O)] n or [Ga(HPDC)(OH)(H2O)] n , I, isotypic with a V3+ coordination polymer previously reported by Chen et al. [J. Coord. Chem. (2008). 61, 3556–3567] was prepared from Ga3+ and pyrazole-3,5-dicarboxylic acid monohydrate (H3PDC·H2O). Compound I was isolated using three distinct experimental methods: hydrothermal (HT), microwave-assisted (MWAS) and one-pot (OP) and the crystallite size should be fine-tuned according to the method employed. The coordination polymeric structure is based on a dimeric Ga3+ moiety comprising two μ2-bridging hydroxide groups, which are interconnected by HPDC2− anionic organic linkers. The close packing of individual polymers is strongly directed by the supramolecular interactions, namely several O—H...O and N—H...O hydrogen-bonding interactions.

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45

Dehno Khalaji, Aliakbar, Seyyed Javad Peyghoun, Michal Dusek, Monika Kucerakova, Alireza Akbari, and Nourollah Feizi. "Crystal structures of the bis-bidentate N2S2 Schiff base ligand and its copper(I) coordination polymer." Macedonian Journal of Chemistry and Chemical Engineering 38, no. 2 (December 30, 2019): 207. http://dx.doi.org/10.20450/mjcce.2019.1800.

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A new flexible bis-bidentate N2S2 Schiff base ligand (2,4-Cl-ba)2dapte = N,Nʹ-bis-(2,4-dichlorobenzaldehyde)-1,2-di(o-iminophenylthio)ethane and its copper(I) coordination polymer [Cu2(μ-I)2(μ-(2,4-Cl-ba)2dapte)]n, were synthesized and characterized by CHN elemental analysis, FT-IR and UV-Vis spectroscopy and single-crystal X-ray diffraction. The molecule of (2,4-Cl-ba)2dapte adopts a trans conformation of the 1,2-di(o-iminophenylthio)ethane unit. The (2,4-Cl-ba)2dapte acts as a bis-bidentate ligand with two iminic nitrogen and two sulfur atoms, coordinating to copper(I) ions in an anti-form leading to the dinuclear Cu2(μ-(2,4-Cl-ba)2dapte) groups. These groups are then bridged by two iodide anions to form a copper(I) coordination polymer [Cu2(μ-I)2(μ-(2,4-Cl-ba)2dapte)]n. The coordination geometry around the copper(I) ions is a distorted tetrahedron. Finally, a nano-sized form of the copper(I) coordination polymer [Cu2(μ-I)2(μ-(2,4-Cl-ba)2dapte)]n was prepared by an ultrasonic bath assisted process and characterized by elemental analysis, FT-IR and SEM.

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46

Rancan, Marzio, Alice Carlotto, Gregorio Bottaro, and Lidia Armelao. "Effect of Coordinating Solvents on the Structure of Cu(II)-4,4′-bipyridine Coordination Polymers." Inorganics 7, no. 8 (August 19, 2019): 103. http://dx.doi.org/10.3390/inorganics7080103.

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Solvent can play a crucial role in the synthesis of coordination polymers (CPs). Here, this study reports how the coordinating solvent approach (CSA) can be used as an effective tool to control the nature of the final CP. This study exploited the system Cu(II)-4,4′-bipyridine coupled to different coordinating solvents, such as DMA, DMF and DMSO. This allowed the isolation and structurally characterization of four new CPs: three 2D layered networks and one 1D chain. Moreover, it was evidenced that even adventitious water can play the role of the coordinating solvent in the final CP.

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Chen, Zi-Lu, Yu-Zhen Zhang, and Fu-Pei Liang. "Poly[aqua-μ3-p-aminobenzoato-κ3 N:O:O′-μ2-p-aminobenzoato-κ2 O:O′-p-aminobenzoato-κ2 O,O′-gadolinium(III)]." Acta Crystallographica Section E Structure Reports Online 62, no. 7 (June 14, 2006): m1550—m1552. http://dx.doi.org/10.1107/s1600536806021489.

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In the title compound, [Gd(C7H6NO2)3(H2O)] n , a two-dimensional coordination polymer, the eight-coordinate GdIII ions are bridged by two carboxylate groups from two μ2-p-aminobenzoate ligands, forming a centrosymmetric dinuclear block. These blocks are further connected by μ3-p-aminobenzoate ligands, yielding a two-dimensional network. The coordination polymers thus formed are connected via hydrogen bonds, producing a three-dimensional supramolecular structure.

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Abbas Omran, Khalida. "The Construct and Interpretation of Chelated Coordination Polymers and Their Use in Nanomaterials Research." Journal of Environmental and Public Health 2022 (August 10, 2022): 1–13. http://dx.doi.org/10.1155/2022/3937375.

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Presently, an important step from basic research to practical applications is synthesizing nanostructured materials. Metal-organic structures, as well as coordination polymers, are a diverse group of materials with a wide range of potential and properties applications. It has been difficult to get these materials into commercial use because of many drawbacks. Polymers containing chelated units are described and assessed for their advancements and problems in preparation, properties, and structure. Here, a proposed approach based on designing coordination polymeric materials with chelated units using the metal-ligand approach (CPM-CU-MA) has been introduced for a columnar-layered plan, supramolecular components, and building levels. Nanocomposite materials can be formed through the thermal transformation of coordination polymers based on donor atoms. The polymeric metal chelates (PMCs) are categorized according to luminescent coordination polymer (LCoP) development. It is classified as macrocyclic intracomplex, polynuclear, and molecular according to its macrostructure. Supramolecular networks (SMNs) can be transformed into a coordination polymer by introducing cyclo-dehydrogenation of natural building blocks on a surface. The structure-property connections of LCPs can influence a framework of liquid crystal display (LCP) that has been given based on LC phase modulators with a large modulation depth and has useful applications in LC lens. In the spatial organization of PMCs, the main focus is on the commonalities and contrasts between higher- and lower-molecular-weight chelates based on molecularly imprinted sensors (MISs) and nanomaterial sensors for a wide range of uses. New functional nanoparticles based on the molecular components have exciting potential, as demonstrated by these findings based on parameters risk factors for human health, hazards reduction in the environment, lack of cost-effectiveness, environmental sustainability, and bioavailability of polymers with an overall performance of 95.3%.

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Hübscher, Jörg, Michael Günthel, Robert Rosin, Wilhelm Seichter, Florian Mertens, and Edwin Weber. "Synthesis and Structural Characterisation of New Bifunctional o-Hydroxyacetophenones – Potential Linker Molecules for Coordinative Framework Construction." Zeitschrift für Naturforschung B 68, no. 3 (March 1, 2013): 214–22. http://dx.doi.org/10.5560/znb.2013-2332.

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Two new linker-type molecules 1a and 1b composed of o-hydroxyacetophenone coordinative groups attached to linear ethynylene or 1,4-phenylenediethynylene spacer units have been synthesised and structurally characterised. An X-ray crystallographic study for both compounds has shown structures with strong intramolecular hydrogen bonds fitting in the model of ‘Intramolecular Resonance Assisted Hydrogen Bond (IRHAB)’. Initial coordination experiments with Cu(II) were performed and the resulting materials characterised by PXRD. The similarity of the copper coordination between these compounds and copper(II) acetylacetonate complexes was demonstrated by XPS measurements. Based on the evidence of these studies, and on elemental analysis, the formation of the corresponding coordination polymers comprising Cu(II) and the linkers has been proposed

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Wen, Tian, Wolfgang Schmitt, and Lei Zhang. "An Fe(iii)-doped coordination polymer of Mn13-clusters with improved activity for the oxygen reduction reaction." Dalton Transactions 48, no. 15 (2019): 4794–97. http://dx.doi.org/10.1039/c9dt00199a.

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Homogeneously distributed Fe(iii) dopants were introduced into porous coordination polymers of Mn₁₃-clusters to form composite materials. The resulting Fe@Mn₁₃-polymer exhibited efficient oxygen reduction reaction (ORR) activity.

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Journal articles on the topic 'Polymère de coordination'

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