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Relevant bibliographies by topics / Cobalt(II) coordination polymer

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Academic literature on the topic 'Cobalt(II) coordination polymer'

Author: Grafiati

Published: 5 June 2025

Last updated: 24 June 2025

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Journal articles on the topic "Cobalt(II) coordination polymer"

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Khunur, Mohammad Misbah, and Yuniar Ponco Prananto. "Synthesis and Structure of 2D Cobalt(II)-tartrate Hydrate Coordination Polymers Crystallised from Aqueous Solution." Bulletin of Chemical Reaction Engineering & Catalysis 13, no. 2 (2018): 213. http://dx.doi.org/10.9767/bcrec.13.2.1342.213-219.

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Cobalt(II)-tartrate hydrate coordination polymer is successfully crystallisedfrom aqueous solution at room temperature. Unlike previous methods, diammonium tartrate was used and reacted directly with an aqueous solution of cobalt(II). Single crystal X-ray and ATR-IR analyses were performed toward the synthesized crystal. The crystal structure displaysa (6,3) 2D sheet which then grow into a 3D hydrogen-bonded network. Tetra- and hexa-dentate dianionic tartaric ligands are observed in the crystal structure, in which the hexadentate ligand connects four different cobalt centres. This method is considered feasible, affordable, and simple for the production of functional polymeric cobalt(II)-tartrate hydrate. Copyright © 2018 BCREC Group. All rights reservedReceived: 17th July 2017; Revised: 30th October 2017; Accepted: 30th October 2017; Available online: 11st June 2018; Published regularly: 1st August 2018How to Cite: Khunur, M.M., Prananto, Y.P. (2018). Synthesis and Structure of 2D Cobalt(II)-tartrate Hydrate Coordination Polymers Crystallised from Aqueous Solution. Bulletin of Chemical Reaction Engineering & Catalysis, 13 (2): 213-219 (doi:10.9767/bcrec.13.2.1342.213-219)

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Dzesse T., Christelle N., Felicite Majoumo-Mbe, Emmanuel N. Nfor, and Susan A. Bourne. "A homochiral coordination polymer of cobalt(II) and L-serine." Acta Crystallographica Section C Structural Chemistry 77, no. 12 (2021): 764–69. http://dx.doi.org/10.1107/s2053229621011347.

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A one-dimensional chiral cobalt(II) coordination polymer, namely, catena-poly[[[(S)-2-amino-3-hydroxypropanoato-κ2 N,O 1]cobalt(II)]-μ-(S)-2-amino-3-hydroxypropanoato-κ4 O 1,O 3:N,O 1′], [Co(C3H6NO3)2] n or Δ-[Co(L-Ser-κ2 N,O)2] n (L-Ser = L-serine) (1), has been synthesized and characterized using elemental and thermal analyses, IR spectroscopy and single-crystal and powder X-ray diffraction techniques. The asymmetric unit of 1 consists of two serine anions which are coordinated to a Co2+ ion to give three chelate rings. These extend the structure into a helical chain with pendant chelate rings which participate in interchain hydrogen bonding. The ability of 1 to undergo transmetallation was evaluated. Among a range of divalent metal ions, only copper(II) partially replaced cobalt(II).

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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 (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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Kansız, S., G. Kaştaş, M. K. Gümüş, N. Dege, and R. Aydın. "SYNTHESIS, STRUCTURAL CHARACTERIZATION, AND SUPRAMOLECULAR ASSEMBLY OF A ONE-DIMENSIONAL COBALT(II) COORDINATION POLYMER WITH SUCCINATO AND ISONICOTINAMIDE LIGANDS." Журнал структурной химии 66, no. 4 (2025): 142957. https://doi.org/10.26902/jsc_id142957.

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A novel one-dimensional coordination polymer, catena-poly[μ-succinatobis(isonicotinamide-κN)diaquacobalt(II)], [Co(suc)(ina)₂(H₂O)₂]n (suc = succinate, ina = isonicotinamide), was synthesized via the reaction of cobalt(II) chloride hexahydrate, sodium hydroxide, succinic acid, and isonicotinamide in aqueous methanol. Structural characterization using single-crystal X-ray diffraction, FT-IR spectroscopy, and thermal analysis revealed that Co(II) exhibits an octahedral coordination geometry, with succinate bridging the cobalt centers to form a one-dimensional polymeric chain. Extensive hydrogen bonding stabilizes the three-dimensional supramolecular architecture.

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Giuseppe, Bruno, Nicolò Francesco, Grassi Giovanni, Saccà Alessandro та Viviana Mollica Nardo. "Poly[(μ4-decanedioato)cobalt(II)]". Acta Crystallographica Section E Structure Reports Online 70, № 5 (2014): m159. http://dx.doi.org/10.1107/s1600536814006011.

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In the title compound, [Co(C10H16O4)]n, the CoIIatom is bonded in a slightly distorted tetrahedral environment by four O atoms from the bridging sebacate dications, comprising two separate half-ligands which lie across crystallographic inversion centres. In the three-dimensional network coordination polymer, there are two different spatial extensions of CoIIatoms, one with the CoIIatoms lying parallel to (100) [Co...Co = 4.653 (1) Å], the other lying parallel to (010) [Co...Co = 4.764 (1) Å].

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Li, Bai-Ling, Jun-Ku Wang, Jin-Sheng Gao, Ying-Hui Yu, and Dong-Sheng Ma. "A semi-rigid tricarboxylate ligand based Co(ii) coordination polymer: construction and applications in multiple sensing." New Journal of Chemistry 44, no. 9 (2020): 3664–71. http://dx.doi.org/10.1039/c9nj05766h.

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Zaręba, J. K., J. Janczak, M. Samoć, and M. Nyk. "Spectrally-resolved third-harmonic generation and the fundamental role of O–H⋯Cl hydrogen bonding in Oh, Td-cobalt(ii) tetraphenylmethane-based coordination polymers." Dalton Transactions 46, no. 29 (2017): 9349–57. http://dx.doi.org/10.1039/c7dt01518f.

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Pariyar, Anand, Siddharth Gopalakrishnan, Joseph Stansbery, et al. "A 1-D coordination polymer route to catalytically active Co@C nanoparticles." RSC Advances 6, no. 45 (2016): 38533–40. http://dx.doi.org/10.1039/c6ra04650a.

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Pyrolysis of a 1-D polymeric cobalt(ii) coordination complex ([Co(BDC)(Mim)<sub>2</sub>]<sub>n</sub>, H<sub>2</sub>BDC = benzenedicarboxylic acid; Mim = N-methylimidazole) results in the formation of carbon embedded fcc cobalt nanoparticle composites, Co@C.

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Fischer, Andrei I., Vladislav V. Gurzhiy, Julia V. Aleksandrova та Maria I. Pakina. "Crystal structure of a CoIIcoordination polymer:catena-poly[[μ-aqua-bis(μ-2-methylpropanoato)-κ2O:O′;κ2O:O-cobalt(II)] monohydrate]". Acta Crystallographica Section E Crystallographic Communications 73, № 3 (2017): 318–21. http://dx.doi.org/10.1107/s2056989017001360.

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In the title cobalt(II) coordination polymer with isobutyrate ligands, {[Co{CH(CH3)2CO2}2(H2O)]·H2O}n, the Co2+ion is hexacoordinated in a slightly distorted octahedral coordination environment defined by two O atoms from two bridging water molecules and four O atoms from four bridging carboxylate ligands. The carboxylates adopt two different coordination modes, μ-(κ2O:O′) and μ-(κ2O:O), forming a one-dimensional polymeric chain extending along [010]. The intra-chain cobalt...cobalt separation is 3.2029 (2) Å. The polymeric chains are linked by hydrogen bonds involving the water molecules of solvation, giving a two-dimensional network structure lying parallel to (100).

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Trunova, O. K., L. I. Zheleznova, V. V. Dyakonenko, L. I. Sliusarchuk, O. О. Shtokvysh, and O. V. Berzenina. "Crystal structure of the mixed-ligand complex of Co(II) with succinic acid and pyridine." Voprosy Khimii i Khimicheskoi Tekhnologii, no. 1 (February 2025): 45–54. https://doi.org/10.32434/0321-4095-2025-158-1-45-54.

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A new mixed-ligand complex {[Со(С4Н4О4)2Ру]2H2O}n was synthesized via the interaction of equimolar amounts of cobalt nitrate and sodium succinate in the presence of pyridine at pH 5.5–6.0. The complex was investigated by X-ray structure analysis, elemental analysis, UV/VIS and IR spectroscopies, and differential thermal analysis. The complex is a one-dimensional coordination polymer and crystallizes in the orthorhombic space group Pbca with unit cell parameters a=11.8945 Å, b=8.9064 Å, c=15.1116 Å, ===900. The atom of cobalt has a slightly distorted octahedral N2O4 environment and forms Co–N bonds with two molecules of pyridine and Co–O bonds with the carboxyl groups of two symmetric succinic acid molecules. The coordination number Co(II) is supplemented up to 6 by two water molecules, which are located in the axial plane of the coordination polyhedron. Due to the monodentate coordination of two symmetrically independent carboxylate oxygen atoms of one succinic acid molecule, one-dimensional coordination polymer chains are formed. Polymer chains in the crystal are united by intermolecular hydrogen bonds, which leads to the formation of layers packed in the crystal parallel to the (001) plane. Hirschfeld surface analysis and two-dimensional fingerprint plots were used to analyze the intermolecular interactions present in the crystal.

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Dissertations / Theses on the topic "Cobalt(II) coordination polymer"

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James, Christopher Dominic. "PARAMAGNETIC RESONANCE STUDIES OF HIGH-SPIN COBALT (II) COORDINATION COMPLEXES." Miami University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=miami152267342524459.

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Altahan, Mohammed Abdulredha. "Cobalt(III), copper(II), and nickel(II) coordination compounds as cations in polyborate chemistry." Thesis, Bangor University, 2017. https://research.bangor.ac.uk/portal/en/theses/cobaltiii-copperii-and-nickelii-coordination-comppounds-as-cations-in-polyborate-chemistry(ba5f189b-2229-481f-9d8d-0bdce17903a8).html.

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This thesis describes the synthesis and characterization of a number of polyborate compounds containing transition metal complex cations; most of these compounds contain 6-membered B3O3 boroxole rings within their structures. A total of twenty-six transition metal complex polyborate salts are reported: one contains the triborate monoanion, [B3O3(OH)4]-, three contain the tetraborate dianion [B4O5(OH)4]2-, twelve contain the pentaborate anion, [B5O6(OH)4]-, three contain the hexaborate dianion, [B6O7(OH)6]2- and five contain heptaborate anions (three of which are [B7O9(OH)5]2-, and two are [B7O9(OH)6]3-). Additionally, two compounds contain two isolated polyborate anion species (octaborate dianion [B8O10(OH)6]2- with pentaborate anion [B5O6(OH)4]-, and triborate anion [B3O3(OH)4]- with [B5O6(OH)4]-). The crystal structures of fifteen salts containing these polyborate anions are reported: [Co(en)3][B5O6(OH)4][B8O10(OH)6]∙5H2O (6), [Co(NH3)6]2[B4O5(OH)4]3∙11H2O (9), s-fac-[Co(dien)2][B7O9(OH)6]∙9H2O (11), [Co(diNOsar)]2[B3O3(OH)4]Cl5∙4.75H2O (12), [Cu(en)2][B5O6(OH)4]2∙2H2O (20), [Cu(pn)2{B5O6(OH)4}][B5O6(OH)4]∙4H2O (22), [Cu(TMEDA){B6O7(OH)6}]∙6H2O (23), [Cu(dac)2(H2O)2][Cu(dac)2][B7O9(OH)5]2∙4H2O (24), [Cu(N,N-dmen)2(H2O)][B5O6(OH)4]2·3H2O (27), [Cu(N,N-dmen){B6O7(OH)6}]·4H2O (28), [Ni(en){B6O7(OH)6}(H2O)2]∙H2O (37), [Ni(AEN)][B5O6(OH)4]∙H2O (38), [Ni(dac)2(H2O-)2][Ni(dac)2][B7O9(OH)5]2∙4H2O (39), [Ni(hn)2][B5O6(OH)4]2 (40), and s-fac-[Ni(dien)2][B5O6(OH)4]2 (41). All the synthesized compounds reported were characterized using spectroscopic (IR, multi-element NMR) and analytical (melting point, elemental analysis, magnetic susceptibility, thermal analysis, powder X-ray diffraction) techniques. The solid-state structures of transition metal complex polyborate salts all display multiple cation-anion H-bond interactions and these undoubtedly play a major role in the energetics of engineering these structures. For example, in compound [Co(NH3)6]2[B4O5(OH)4]3∙11H2O (9), fourteen of the 18 amino hydrogen atoms of the [Co(NH3)6]3+ cation are involved in secondary coordination to anions via H-bonds. Two unique polyborate anions, [B8O10(OH)6)]2- and [B7O9(OH)6]3- have been prepared and characterized in [Co(en)3][B5O6(OH)4][B8O10(OH)6]∙5H2O (6) and s-fac-[Co(dien)2][B7O9(OH)6]∙9H2O (11), respectively. vii The reaction of transition metal complex cations with boric acid in different ratios produced polyborate compounds with different polyborate anions e.g. reaction of [Cu(en)2]2+ with boric acid in 1:10 and 1:5 ratios produce polyborate compounds with pentaborate(1-) and tetraborate(2-) anions, respectively. New polyborate anion structural architectures are identified in this thesis: (i) the pentaborate(1-) anion in [Cu(pn)2{B5O6(OH)4}][B5O6(OH)4]∙4H2O (22) acts as a monodentate ligand coordinated to the Cu(II) cation, (ii) the hexaborate(2-) anion in [Cu(TMEDA){B6O7(OH)6}]∙6H2O (23) and [Cu(N,N-dmen){B6O7(OH)6}]·4H2O (28) coordinates as a tridentate ligand with the Cu(II) cations, and (iii) the hexaborate(2-) anion in [Ni(en){B6O7(OH)6}(H2O)2]∙H2O (37) coordinates as a bidentate ligand with the Ni(II) cation. This is the first time that such coordination mode (i) and (iii) have been observed.

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Thuery, Pierre. "Transitions de spin dans la chimie moléculaire du cobalt(ii) et du fer (ii)." Paris 11, 1987. http://www.theses.fr/1987PA112341.

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Ce travail est principalement consacré à l'étude des transitions de spin dans des complexes du cobalt (II). Les synthèses d'une série de complexes penta- et hexacoordinés, ayant pour ligands équatoriaux des bases de Schiff et différents types de ligands équatoriaux des bases de Schiff et différents types de ligands axiaux, sont décrites. Les évolutions des susceptibilités magnétiques et des spectres RPE en fonction de la température permettent d'étudier l'influence de l'environnement de l'ion métallique sur son état de spin. Les propriétés observées sont interprétées sur la base de modèles simples. Plusieurs transitions de spin s - 1/2 - s = 3/2 thermo-induites sont mises en évidence. Par ailleurs, une corrélation peut être établie entre la géométrie et l'état de spin de ces complexes et leur aptitude à activer l'oxygène moléculaire. En vue de préciser le mécanisme de la transition de spin, des techniques d'investigations structurale et thermodynamique sont utilisées : la structure cristallographique de l'un des complexes est décrite, les variations moyennes des distances métal-ligand au cours de la transition sont évaluées par spectrométrie d'absorption des rayons X ; les variations d'enthalpie et de chaleur spécifique mesurées par ose sont confrontées aux valeurs calculées a partir d'un modèle phénoménologique. Enfin, une nouvelle façon de détecter la transition, grâce à son effet sur le spectre RPE d’un ion dopant Cu(II), est décrite dans le cas d'un complexe du fer(II)<br>This work mainly deals with the spin crossover phenomenon in cobalt (II) molecular chemistry. The synthesis of a series of five- and six coordinated complexes, with Schiff bases as equatorial ligands and various apical ones, are reported. The temperature dependances of magnetic susceptibilities and EPR spectra are used to study the influence of the environment on the metal ion spin state. The behaviours observed are interpreted on the basis of simple models. Evidence is provided for thermally induced s = 1/2 - s -= 3/2 spin crossovers. In other respects, a correlation can be established between the geometry and spin state of these complexes and their ability to activate molecular oxygen. In order to specify the spin-crossover mechanism, structural and thermodynamic techniques are used: the ingle-crystal X-ray structure of one of the compounds is reported ; the mean variation of metal-ligand distances upon transition is evaluated by X-ray absorption spectroscopy; enthalpy and heat capacity changes, measured by DSC, are compared with the values calculated on the basis of a phenomenological model. A new means of detecting the crossover, by using its effect on the EPR spectrum of a Cu(II)doping ion, is described in the case of an iron (II) complex

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Castaldelli, Evandro. "Polímeros de coordenação à base de cobalto(II) e N,N'-bis(4-piridil)-1,4,5,8-naftaleno diimida como ligante e suas propriedade estruturais, espectroscópicas e fotoelétricas." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/59/59138/tde-25042016-110820/.

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Polímeros de coordenação têm atraído a atenção de pesquisadores na última década por conta de sua incrível versatilidade e virtualmente infinito número de possibilidades de combinação de ligantes orgânicos e centros metálicos. Estes compostos normalmente herdam as características magnéticas, eletrônicas e espectroscópicas de seus componentes base. Entretanto, apesar do crescente número de trabalhos na área, ainda são raros os polímeros de coordenação que apresentem condutividade elétrica. Para este fim, utilizou-se a N,N\'-bis(4-piridil)-1,4,5,8-naftaleno diimida, ou NDI-py, que pertence a uma classe de compostos rígidos, planares, quimicamente e termicamente estáveis e que já foram extensamente estudados por suas propriedades fotoeletroquímicas e semicondução do tipo n. O primeiro polímero de coordenação sintetizado, MOF-CoNDI-py-1, indicou ser um polímero linear, de estrutura 1D. O segundo, MOF-CoNDI-py-2, que conta com ácido tereftálico como ligante suporte, é um sólido cristalino com cela unitária monoclínica pertencente ao grupo espacial C2/c, determinado por difração de raios-X de monocristal. A rede apresenta um arranjo trinuclear de íons Co(II) alto spin com coordenados em uma geometria de octaedro distorcido, enquanto os ligantes NDI-py se encontram em um arranjo paralelo na estrutura, em distâncias apropriadas para transferência eletrônica. Com o auxílio de cálculo teóricos a nível de DFT, foi realizado um estudo aprofundado dos espectros eletrônicos e vibracionais, com atribuição das transições observadas, tanto para o MOF-CoNDI-py-2 quanto para o ligante NDI-py livre. A rede de coordenação absorve em toda a região do espectro eletrônico analisada, de 200 nm a 2500 nm, além de apresentar luminescência com característica do ligante. Dispositivos eletrônicos fabricados com um cristal do MOF-CoNDI-py-2 revelaram condutividades da ordem de 7,9 10-3 S cm -1, a maior já observada para um MOF. Além de elevada, a condutividade elétrica dos cristais demonstrou-se altamente anisotrópica, sendo significativamente menos condutor em algumas direções. Os perfis de corrente versus voltagem foram analisados em termos de mecanismos de condutividade, sendo melhores descritos por um mecanismo limitado pelo eletrodo to tipo Space-Charge Limited Current, concordando com a proposta de condutividade através dos planos de NDI-py na rede. A condutividade dos cristais também é fortemente dependente de luz, apresentando fotocondução quando irradiado por um laser vermelho, de 632 nm, enquanto apresenta um comportamento fotorresistivo frente a uma fonte de luz branca. Estes resultados, combinados, trazem um MOF em uma estrutura incomum e com elevada condutividade elétrica, modulada por luz, em medidas diretas de corrente. Não existem exemplos conhecidos de MOFs na literatura com estas características.<br>Coordination polymers have been a major topic in materials science during the past decade, thanks to their versatility and virtually infinite possible combinations between metal centers and organic ligands. These coordination polymers usually inherit the properties of their components, such as magnetic, spectroscopic and electronic characteristics. However, despite the increasing number of research papers in this topic, it is still hard to find coordination polymers featuring electronic conductivity. To achieve that, we used a naphthalene diimide derivative, N,N\'-bis(4-pyridyl)-1,4,5,8- naphthalene diimide or NDI-py, which belongs to a class of rigid, planar, thermally and chemically stable compounds, extensively studied due to their photoelectrochemical properties and their n-type semiconductivity. The first coordination polymer synthesised, MOF-CoNDI-py-1, was an amorphous linear polymer, with a 1D structure. Based on these observations, MOF-CoNDI-py-2 was synthesised by using terephthalic acid as a supporting ligand, and it is a crystalline solid which its monoclinic unit cell belongs to a C2/c space group, as determined by single crystal X-ray diffraction. This network features a trinuclear high-spin Co(II) unit, and each metal ion sits on a distorted octahedra coordination geometry, while the NDI-py ligands sit in a parallel arrangement, with distances suitable for electronic transfers. A detailed study of their vibrational and electronic spectra, supported by DFT calculations, was performed, as well as a full description and assignment of the observed bands. MOF-CoNDI-py-2 absorbs in the whole studied spectral region, from 200 nm to 2500 nm, while it also features a ligand-centered emission spectrum. Electronic devices built around its crystals revealed electric conductivities of 7.9 10 -3 S cm -1, which is, to the best of our knowledge, the highest for a MOF to this date. This conductivity is also highly anisotropic, being significantly less conductive in certain directions. The current versus voltage profiles were analysed in terms of known conduction mechanisms, with best fits when using an electrode-limited Space-Charge Limited Current mechanism, in agreement with the proposition that this conductivity happens through the NDI-py stacking planes. Additionally, this mechanism is influenced by an external light source, being a photoconductor with a red laser, 632 nm, and a photoresistor with a white light. Combined, these results bring a light-modulated, highly conductive MOF material with an unusual structure. As far as we know, there are no similar MOFs in the literature, which makes MOF-CoNDI-py-2 one of a kind.

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Ortiz, Guillaume. "Synthèse de polymères de coordination poreux pour l'adsorption sélective du dioxyde de carbone." Thesis, Dijon, 2011. http://www.theses.fr/2011DIJOS018.

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La conception de matériaux capables de piéger sélectivement le CO2 revêt un enjeu majeur dans le développement de procédé de capture post-combustion pour de nombreux secteurs industriels. Nos travaux visent l'élaboration de nouveaux polymères de coordination de type MOF (“Metal-Organic Framework”) préparés par auto-assemblage de briques moléculaires polycarboxyliques avec des métaux de transition qui constituent les noeuds du réseau tridimensionnel. Ces matériaux hybrides microporeux présentent des propriétés d’adsorption du CO2 importantes. Notre approche a consisté à synthétiser des polymères de coordination dans le but d'accroître la capacité et la sélectivité d'adsorption du CO2 vis-à-vis d'autres gaz comme CO, CH4, N2 et O2 grâce à des interactions physiques impliquant le moment quadripolaire élevé du CO2 et le potentiel électrostatique existant dans les pores du matériau. Dans ce mémoire sont décrites les synthèses des différentes briques moléculaires organiques constituées de polyamines et de polyazamacrocycles Nfonctionnalisées par des terminaisons benzocarboxylate. Des matériaux homo- et hétéro- bimétalliques présentant des structures cristallines originales ont été obtenus à partir de briques moléculaires triazamacrocycliques N-fonctionnalisées par des terminaisons acides carboxyliques et différents cations métalliques (Zn2+, Co2+, Cd2+ et Ni2+). Les études de ces polymères de coordination poreux ont révélé leur capacité d’adsorption importante du CO2 avec une sélectivité remarquable dans les conditions normales de température et de pression<br>The design of material able for CO2 capture is a major issue to achieve post-combustion capture process for many industries. Our work aims to develop new coordination polymer MOF (“Metal-Organic Framework”) prepared by self-assembling polycarboxylic linkers and transition metals. These microporous hybrids materials show important CO2 adsorption properties and are promising in the field of gas separation. The main topic of our work is to synthesise MOFs with high adsorption capacity and selectivity for CO2 over other gases (CO, CH4, N2 and O2). The gas-solid interactions are due to physical phenomena involving the high quadrupolar moment of CO2 and the electrostatic potential lying in the pore of the material. In this manuscript, the synthesis of various organic linkers incorporating N-functionalised polyamines and polyazamacrocycles with benzocarboxylate functions is described. Homo- and hetero- bimetallic materials with original tridimensional structure were obtained from a N-functionalised triazamacrocyclic linker and different metal cations (Zn2+, Co2+, Cd2+ and Ni2+). Studies of porous coordination polymers have shown high CO2 adsorption capacity with a remarkable selectivity in the ambient temperature and pressure conditions

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Farran, Rajaa. "Transfert d'électron photoinduit au sein d'assemblages hétérométalliques associant le [Ru(bpy)3]2+ à des complexes bisterpyridine du Fe(II), Co(III) et Cr(III)." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAS009/document.

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La thèse commence le 1er octobre 2012. IL s'agit pour cette première année de thèse de synthétiser différents complexes de coordination a base du Ruthénium, Fer, Manganèse et de Cobalt à ligands polypyridinique. Ces complexes seront ensuite assemblés par lien covalent. Nous proposons d'utiliser entre autre les techniques d'electrochimie pour induire ces couplages. On cherchera aussi a immobiliser les assemblages sur surface. La principale difficulté attendue dans cette etape du travail concerne la fonctionalisation dissymétrique des ligands pour l'obtention de triade<br>This thesis deals with the synthesis and characterization of inorganic triads for photoinduced charge separation. A range of photosensitizers will be studied, and the effect of the donor and acceptor will be assesed as well. These systems will be studied in solution and immobalized on surfaces. Cette thèse traite de la synthèse et la caractérisation des triades inorganiques pour la séparation de charge photoinduite. Une gamme de photosensibilisateurs seront étudiées, et l'effet du donneur et accepteur sera ainsi étudié. Ces systèmes seront étudiés en solution et immobalizes sur les surfaces

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Bulicanu, Vladimir. "Synthesis and study of magnetic molecular materials based on Co(II) and Cr(II) trinuclear clusters containing M-M bonds." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0239.

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Dans cette thèse est décrite la synthèse et les propriétés magnétiques des composés de coordination contenant des liaisons Co-Co ou Cr-Cr. Le contexte général sera discuté dans la première partie de ce travail en considérant l'évolution historique de ce type de chimie de coordination. Dans le deuxième chapitre, la possibilité d'intégrer un cluster {Co3} avec des ligands dipyridylamide et liaisons intermétalliques, dans des polymères de coordination unidimensionnels est discutée. Les interactions entre les porteurs de spin et l'effet du ligand pontant sont étudiés. Les changements des propriétés de transition de spin sont contrôlés en comparant par rapport au précurseur. Dans le troisième chapitre, les propriétés de molécule aimant d'un cluster de {Cr3} analogue à celui du {Co3}, sont étudiées. L'influence du ligand axial et la symétrie de la molécule sont également considérés et corrélées avec les propriétés de la molécule. Dans le quatrième chapitre, l'effet de la transition de spin induite par la coordination est étudié sur un exemple de cluster de {Co3} avec des ligands dipyridylformamidinate. La rupture et le rétablissement d'une liaison Co-Co est contrôlée par le biais de la température et de la lumière. L'effet de la rupture de la liaison intermétallique sur les propriétés magnétiques et structurales est aussi étudié<br>In this thesis is described the synthesis, structures and magnetic properties of coordination compounds containing Co-Co or Cr-Cr bonds. In the first part of this work a general background is given on the historical evolution of this type of coordination chemistry. In the second chapter the possibility of incorporating a {Co3} cluster with dipyridylamide ligands and intermetallic bonds into one-dimentional coordination polymers is discussed. The interactions between spin centers and the effect of the bridging ligand were studied, and changes in the spin crossover properties were monitored and compared to the precursor. In the third chapter the Single-Molecule Magnet properties of a series of {Cr3} clusters are presented. The influence of the axial ligand and the symmetry of the molecule was considered and correlated to the magnetic properties. In the fourth chapter the phenomenon of coordination induced spin transition in a {Co3} cluster with dipyridylformamidinate ligands is discussed. Changes in magnetism and optical properties as a result of the breaking and restoring of a Co-Co bond were monitored as a function of temperature and light irradiation

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Coetzee, Jacorien. "New developments in the coordination chemistry of Gold(I), Gold(II) and Gold(III) with C-, N- , P-and S-donor ligands." Thesis, Stellenbosch : University of Stellenbosch, 2007. http://hdl.handle.net/10019.1/1702.

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Thesis (MSc (Chemistry and Polymer Science))--University of Stellenbosch, 2007.<br>A comprehensive, comparative structural study of gold(I), gold(II) and gold(III) compounds with the general formula [Aux(C6F5)y(tht)z] (tht = tetrahydrothiophene) was performed. The series of compounds included the unprecedented dinucleur gold(II) compound, tetrakis(pentafluorophenyl)bis(tetrahydrothiophene)digold(II), which could be prepared in a rational manner. This very unique compound represents the first example of an unbridged dinucleur gold(II) compound in which the gold(II) centres are not stabilised by chelating ligands. Formation of this compound was postulated to have taken place by radical pentafluorophenyl (pfp) ligand migration along with AuII–AuII bond formation. It may therefore be regarded as a rare example of labile behaviour by a generally inert pfp ligand. In addition to this compound, the crystal and molecular structures of the wellknown gold(I) and gold(III) precursor compounds, (pentafluorophenyl)(tetrahydrothiophene) gold(I) and tris(pentafluorophenyl)(tetrahydrothiophene)gold(III) were carried out and are described for the first time. The latter underwent a unique mononuclear ligand rearrangement (metathesis or disproportionation) reaction in solution to yield the novel rearrangement product, bis(pentafluorophenyl)bis(tetrahydrothiophene)gold(III)tetrakis- (pentafluorophenyl)gold(III). In all the complexes, the Au–C and Au–S bond lengths displayed a variation which appears to be dependent on the oxidation state of the central gold atom. Both of these bond types were found to descrease in the order Au(II) > Au(III) > Au(I)...

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Lapprand, Antony. "Conception et propriétés photophysiques de polymères de coordination et de polymères organométalliques." Thesis, Besançon, 2015. http://www.theses.fr/2015BESA2031/document.

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Ces travaux portent sur la conception et l’étude des propriétés photophysiques de polymères de coordination et organométalliques. Dans un premier temps, nous nous sommes intéressés aux adduits formés à partir d’halogénure de cuivre(I) (CuxXyLz ; X= I, Br, Cl). Cette famille de composés possède une grande richesse structurelle de part les conditions de synthèse (choix du ligand, stoechiométrie, choix du solvant, température…) et des propriétés de luminescence variées. Nous nous sommes concentrés sur la synthèse, la caractérisation physique et photophysique d’adduits de CuX à ligands de types monothioéther (RSR) et dithioéther (RS(CH2)nSR). Nous avons ensuite étendu notre étude aux adduits CuX coordinés à des ligands P-chirogéniques (i.e chiralité portée par l’atome de phosphore) puis à des adduits CuX coordinés à la fois par des ligands phosphorés (PPh3 ou dppm) et par des ligands mono- ou dithioéthers. Dans un second temps, nous avons voulu connaître l’impact de l’incorporation de ligands P-chirogéniques (P(C17H35)(Ph)(i-Pr)) sur les propriétés photophysiques de polymères organométalliques conjugués 1D à base de platine(II) et de ligands arylbiséthynyles (-C≡C(Ar)C≡C-). Ce type de polymère basé sur le platine(II) est souvent utilisé comme modèle dans la compréhension des transferts d’énergie dans les états excités. Ces polymères, une fois caractérisés, ont été comparés aux analogues achiraux contenant le fragment trans-Pt(P(PBu)3)2 et plusieurs différences ont été notées. Les observations et conclusions sur la relation structure-propriété sont utiles pour la conception future de matériaux photoniques portant des groupements chiraux<br>This work focuses on the design and study of photophysical properties of coordination and organometallics polymers. Initially, we focused on adducts formed from copper(I) halides (CuxXyLz; X = I, Br, Cl). Indeed, these compounds have great structural diversity depending on the synthesis conditions (nature of ligand, stoichiometry, choice of solvent, temperature...) and various luminescence properties. We focused on the synthesis, physical and photophysical characterization of copper(I) halide adducts based on monothioether (RSR) and dithioether (RS(CH2)nSR) ligands. Then, we extended our study to the adducts of copper(I) halide coordinated by phosphorus P-chirogenics ligands (ie chirality carried by the phosphorus atom) and then to CuX adducts coordinated by both phosphorus ligands (PPh3 or dppm)) and mono- or dithioether ligands. Secondly, the impact of the incorporation of P-chirogenics ligands (P(C17H35)(Ph)(i-Pr)) on the photophysical properties of organometallic conjugated polymers 1D based on platinum(II) and arylbisethynyles ligands (-C≡C(Ar)C≡C-) was investigated. This type of polymer based on platinum(II) is often used as a model for the understanding of excited states energy transfers. These polymers, once characterized, were compared to the achiral analogues containing the fragment of trans-Pt(P(PBu)3)2 and several differences were noted. The findings and conclusions on the structure-property relationship are useful in the future design of photonic materials bearing chiral groups

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Jouaiti, Abdelaziz. "Activation electrochimique de petites molecules par des composes bi-metalliques et elaboration de films polymeres conducteurs." Université Louis Pasteur (Strasbourg) (1971-2008), 1989. http://www.theses.fr/1989STR13036.

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Reduction electrocatalytique de co::(2) dans le dmf en presence de ni(cyclam)**(2+) (bis cyclam)**(4+). Modification d'electrodes par polymerisation electrolytique de differents complexes de fe ii, co ii et ru ii avec le coordinat (p-pyrrolylmethylphenyl)-4' terpyridine-2,2:6',2". Ce nouveau type d'electrodes peut jouer le role de mediateur redox

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Book chapters on the topic "Cobalt(II) coordination polymer"

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of cobalt(II)-hexamethylenetetramine coordination polymer." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 6. Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-65056-1_178.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of coordination polymer of cobalt(II) with malic acid." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 5. Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-65098-1_263.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of coordination polymer of cobalt(II) with poly-Schiff-base." In Magnetic Properties of Paramagnetic Compounds. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54231-6_511.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of 1D coordination polymer of cobalt(II) with π-radical ligand." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 7. Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-65895-6_230.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of mixed ligand cobalt(II) coordination polymer with benzene-1,2,4,5-tetracarboxylic acid and 5,6-dimethyl-1H-benzimidazole." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 6. Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-65056-1_201.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of mixed ligand cobalt(II) coordination polymer with 2,2′-(1,2-phenylene)diacetic acid and 5,6-dimethyl-1H-benzimidazole." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 6. Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-65056-1_200.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of mixed ligand copper(II) coordination polymer." In Magnetic Properties of Paramagnetic Compounds. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-53974-3_64.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of mixed ligand copper(II) coordination polymer." In Magnetic Properties of Paramagnetic Compounds. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-53974-3_65.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of mixed ligand copper(II) coordination polymer." In Magnetic Properties of Paramagnetic Compounds. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-53974-3_66.

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Pardasani, R. T., and P. Pardasani. "Molar magnetic moment of coordination polymer manganese(II) pyrazinecarboxylate." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 1. Springer Berlin Heidelberg, 2021. http://dx.doi.org/10.1007/978-3-662-62478-4_253.

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Conference papers on the topic "Cobalt(II) coordination polymer"

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Cuba, Lidia, Ion Bulhac, and Paulina Bouros. "Synthesis and characterization of coordination compounds of Co(II) and mn(II) with n,n-heterocyclic ligand." In Conferința științifică națională cu participare internațională "Integrare prin cercetare și inovare", dedicată Zilei Internaționale a Științei pentru Pace și Dezvoltare. Moldova State University, 2025. https://doi.org/10.59295/spd2024n.77.

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Some coordination compounds of cobalt(II) and manganese(II) and N,N-heterocyclic ligand phthalazine are described. Complexes were obtained by the interaction of o-phthalaldehyde (DF), isoniazid (INh) and Co(NCS)2·3H2O or Mn(CCl3COO)2 (1:2:1), are studied by elemental analysis and IR spectroscopy. The molecular structure of Mn(II) complex has been determined by single crystal X-ray diffracton analysis.

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Ok-Sanz Jung, Young-A Lee, and C. G. Pierpont. "Bistability, low energy electron transter, and photomechanics: diimlne-bridged cobalt semiquinonate-catecholate coordination polymer." In International Conference on Science and Technology of Synthetic Metals. IEEE, 1994. http://dx.doi.org/10.1109/stsm.1994.834778.

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Camargo, Lilian Tatiane F. de M., and Ademir J. Camargo. "Estudo Teórico do Mecanismo de Complexação do Íon Cobalto II com a Glucosamina Usando Dinâmica Molecular de Car-Parrinello." In VIII Simpósio de Estrutura Eletrônica e Dinâmica Molecular. Universidade de Brasília, 2020. http://dx.doi.org/10.21826/viiiseedmol202091.

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Cobalt II is essential for the body and is one of the components of vitamin B12. However, in excess, it is toxic. It is present in various industrial and nuclear reactor waste; removing it is necessary. Among the various processes for removing heavy metals from wastewater, adsorption stands out, economical, easy to apply, and efficient. Modified chitosan has shown promise in the adsorption of cobalt II from contaminated waters. Although experimental studies show cobalt II adsorption by chitosan, the adsorption mechanism by chitosan is still unclear. This work aimed to study cobalt coordination with glucosamine (chitosan monomer) in the gas phase and aqueous solvation using the Car-Parrinello Molecular Dynamics. The results show that cobalt can coordinate strongly with the amino group of glucosamine in both the gaseous and aqueous environments. The QTAIM analysis was performed to characterize the interactions. In the gas phase, a partially covalent interaction was observed, while in the aqueous medium, the interaction of Co with glucosamine can be classified as covalent. Understanding the coordination mechanism of cobalt II with glucosamine can help remove cobalt from wastewater.

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Kowalski, Grzegorz, and Jan Pielichowski. "Catalytic Activity of Polymer-Supported Cobalt(II) Catalysts in the Oxidation of Alkenes." In The 16th International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2012. http://dx.doi.org/10.3390/ecsoc-16-01054.

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BELEAEV, Ecaterina. "Synthesis, structure and hirshfeld surface analysis of Co(II) pivalate with 1,10-phenanthroline." In "Instruire prin cercetare pentru o societate prosperă", conferinţă ştiinţifico-practică internaţională. Ion Creangă Pedagogical State University, 2024. https://doi.org/10.46727/c.v1.16-17-05-2024.p62-67.

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A new compound with the formula [Co(piv)2(phen)(H2O)] (1) has been synthesized from the reaction of Co(piv)2 (Hpiv = pivalic acid) with 1,10-phenanthroline (phen) in isopropanol/dmso (1:1) mixture and characterized by IR spectroscopy and single crystal X-ray diffraction studies. The analysis of the Hirshfeld surfaces allowed the quantitative and qualitative identification of the main contacts involved in the molecular packing of complexes in crystal. Keywords: coordination compound, cobalt, phenanthroline, pivalate, Hirshfeld surface, X -ray.

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Xiao, Fengping, and Peng Hu. "Synthesis, characterization, magnetic properties of cobalt coordination polymer based on 4,4'-Oxybisbenzoic acid and 1,4-bis(pyrid-4-yl)benzene." In 2017 International Conference on Material Science, Energy and Environmental Engineering (MSEEE 2017). Atlantis Press, 2017. http://dx.doi.org/10.2991/mseee-17.2017.81.

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Sadeghzadeh, Homa, and Ali Morsali. "Syntheses and characterization of a new nano-structure lead (II) coordination polymer by sonochemical method." In 2010 International Conference on Enabling Science and Nanotechnology (ESciNano). IEEE, 2010. http://dx.doi.org/10.1109/escinano.2010.5701073.

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Prananto, Yuniar Ponco, Eli Hendrik Sanjaya, Tutik Setianingsih, et al. "Preliminary study on the synthesis of Co(II)-tartrate-nicotinamide coordination polymer as functional porous materials." In MATHEMATICS AND ITS APPLICATIONS IN TECHNOLOGY. AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0202452.

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Foley, Kayla, and Keisha B. Walters. "Development of Nano- and Micro-Fluids Using Magnetic Poly(Ionic Liquid)-Surfactant Complexes for Stimuli Response." In ASME 2022 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/fedsm2022-87758.

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Abstract Poly(ionic liquid) (PILs) are a rapidly growing subclass of polyelectrolyte which combines the diverse functionality of ionic liquids with the mechanical integrity, processability, and macromolecular design of polymeric systems. PIL properties are highly dependent on their counterion, which can be easily exchanged to tailor their material properties. Incorporation of metal halide counterions (FeCl4−, CoCl42−, etc.) into the PIL structure results in magnetically responsive metal-salt composites known as magnetic-PILs (MPILs). MPILs are predominately formed through electrostatic binding with anionic metal complexes typically resulting in paramagnetic properties at room temperature. The engineering properties and the ability to effectively apply these materials — is dependent on not only the chemical structure, but the nanostructure, co-materials, self-assembly, and stability in situ. In this study, a PIL copolymer, poly(acrylamide-co-diallyl dimethylammonium chloride), containing a quaternary ammonium PIL group and a comonomer capable of metal coordinating interactions, was combined with sodium dodecyl sulfate surfactant and cobalt (II) chloride salts to form magnetic polyelectrolyte-surfactant complexes. The self-assembly of these complexes was studied as a function of surfactant concentration through DLS, Zeta potential, and TEM characterizations. The magnetic properties were examined using AC susceptibility. The impact of the metal ion(s) and magnetic field on nanostructure alignment and film formation were also investigated through optical microscopy, GISAXS, and AFM imaging. Results were compared to well-defined ferrofluids as a comparative benchmark.

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Yuan, Mengyun, Ruixin Li, Quanjun Li, et al. "Pressure and Thermally Induced Spin Crossover in a 2D Iron(II) Coordination Polymer {Fe[bipy(ttr)2]}n." In 2021 5th IEEE Electron Devices Technology & Manufacturing Conference (EDTM). IEEE, 2021. http://dx.doi.org/10.1109/edtm50988.2021.9420970.

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