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Journal articles on the topic 'Flexible chelating and bridging ligands'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Li, Jian-Rong, Ruo-Hua Zhang, and Xian-He Bu. "Dinuclear Eu(III), Gd(III), and Tb(III) Complexes of meso-1,2-Bis(ethylsulfinyl)ethane with 2,2′:62,2′′-Terpyridine as Co-ligand." Australian Journal of Chemistry 59, no. 5 (2006): 315. http://dx.doi.org/10.1071/ch06071.

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Three dinuclear lanthanide complexes of flexible disulfoxide ligand meso-1,2-bis(ethylsulfinyl)ethane (L), [Ln2(L)2(μ-L)(tpy)4](ClO4)6(CHCl3)4 (Ln = Eu 1, Gd 2) and [Tb2(L)4(μ-L)(tpy)2](ClO4)6(CHCl3) 3 with 2,2′:6′,2′′-terpyridine (tpy) as co-ligand were synthesized and structurally characterized. In 1 and 2, the metal centre is nine-coordinated to two tpy and one-and-a-half L ligands, whereas in 3 it coordinates with one tpy and two-and-a-half L, which may be attributed to the influence of the lanthanide contraction. In such complexes the disulfoxide ligands perform two kinds of coordination

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2

Lin, Hong-Yan, Peng Liu, Xiu-Li Wang, Chuang Xu, and Guo-Cheng Liu. "Syntheses, Structures and Electrochemical Properties of Two New Copper(II) Complexes Based on Isomeric Bis(pyridylformyl)piperazine Ligands and Rigid=Flexible Organic Dicarboxylates." Zeitschrift für Naturforschung B 68, no. 2 (2013): 138–46. http://dx.doi.org/10.5560/znb.2013-2291.

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Two new copper(II) complexes, [Cu2(3-bpfp)(2,6-PDA)2(H2O)2] (1) and [Cu(4-bpfp)0:5 (glu)]·H2O (2), have been hydrothermally synthesized by self-assembly of isomeric bis(pyridylformyl)piperazine ligands [3-bpfp=bis(3-pyridylformyl)piperazine, 4-bpfp=bis(4- pyridylformyl)piperazine], rigid pyridine-2,6-dicarboxylic acid (2,6-H2PDA) or flexible glutaric acid (H2glu), and copper(II) chloride. Single-crystal X-ray diffraction analysis reveals that two adjacent CuII ions are connected by the 3-bpfp ligand to build a dinuclear unit in complex 1, in which 2,6-PDA serves as a terminal chelating ligand.

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3

Jian, Shou-Jun, Qian-Qian Han, Huai-Xia Yang, and Xiang-Ru Meng. "A new three-dimensional zinc(II) coordination polymer involving 2-[(1H-1,2,4-triazol-1-yl)methyl]-1H-benzimidazole and benzene-1,4-dicarboxylate ligands." Acta Crystallographica Section C Structural Chemistry 72, no. 7 (2016): 530–35. http://dx.doi.org/10.1107/s2053229616008779.

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Metal–organic frameworks (MOFs) based on multidentate N-heterocyclic ligands involving imidazole, triazole, tetrazole, benzimidazole, benzotriazole or pyridine present intriguing molecular topologies and have potential applications in ion exchange, magnetism, gas sorption and storage, catalysis, optics and biomedicine. The 2-[(1H-1,2,4-triazol-1-yl)methyl]-1H-benzimidazole (tmb) ligand has four potential N-atom donors and can act in monodentate, chelating, bridging and tridentate coordination modes in the construction of complexes, and can also act as both a hydrogen-bond donor and acceptor. I

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4

Plater, M. J., B. M. De Silva, M. R. St J. Foreman, and W. T. A. Harrison. "Crystal structures of two one-dimensional coordination polymers constructed from Mn2+ ions, chelating hexafluoro-acetylacetonate anions, and flexible bipyridyl bridging ligands." Journal of Structural Chemistry 57, no. 6 (2016): 1169–75. http://dx.doi.org/10.1134/s0022476616060160.

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5

Jia, Weiwei, Junhua Luo, and Miaoli Zhu. "A Molecular Basketwork: Self-Assembly of Coordination Polymers from Zn(II) and Biphenyl-3,4′-dicarboxylate Regulated by Different Flexible Bridging and Chelating N-Donor Ancillary Ligands." Crystal Growth & Design 11, no. 6 (2011): 2386–97. http://dx.doi.org/10.1021/cg200142f.

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6

Hill, Denise D., та Edward R. T. Tiekink. "catena-Poly[[bis(O-isopropyl dithiocarbonato-κ2 S,S′)nickel(II)]-μ-1,2-di-4-pyridylethane-κ2 N:N′]". Acta Crystallographica Section E Structure Reports Online 63, № 11 (2007): m2808. http://dx.doi.org/10.1107/s1600536807051616.

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The Ni atom in the zigzag polymeric title complex, [Ni(C4H7OS2)2(C12H12N2)] n , is situated on a twofold axis and the bridging ligand situated about a centre of inversion. The structure features a distorted octahedral cis-NiN2S4 coordination geometry defined by two chelating O-isopropyl dithiocarbonate ligands and two N atoms derived from the bidentate bridging ligands.

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7

Tian, Hua, Ai-Ling Cheng, and En-Qing Gao. "Ferro- or antiferromagnetic interactions controlled by ditopic or chelating auxiliary ligands in 3D metal–organic frameworks." Dalton Transactions 45, no. 46 (2016): 18696–703. http://dx.doi.org/10.1039/c6dt03975h.

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8

Liu, Yang, та Hai-Hui Liu. "Crystal structure and fluorescence properties ofcatena-poly[[(2,2′-bi-1H-imidazole-κ2N,N′)cadmium]-di-μ-chlorido]". Acta Crystallographica Section E Crystallographic Communications 72, № 10 (2016): 1421–24. http://dx.doi.org/10.1107/s2056989016013736.

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In the polymeric title compound, [CdCl2(C6H6N4)]n, the central CdIIatom is coordinated by four chloride ligands and two N atoms from a chelating 2,2′-bi-1H-imidazole molecule, leading to a distorted octahedral Cl4N2coordination set. As a result of the μ2-bridging character of the Cl ligands, chains parallel to thecaxis are formed, with the chelating 2,2′-bi-1H-imidazole ligands decorated on both sides of the chain. The luminescence properties of the complex dispersed in dimethylformamide shows that the emission intensities are significantly quenched by nitrobenzene.

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9

Pham, Duyen N. K., Mrittika Roy, Ava Kreider-Mueller, James A. Golen, and David R. Manke. "The crystal structures of iron and cobalt pyridine (py)–sulfates, [Fe(SO4)(py)4] n and [Co3(SO4)3(py)11] n." Acta Crystallographica Section E Crystallographic Communications 74, no. 6 (2018): 857–61. http://dx.doi.org/10.1107/s2056989018007557.

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The solid-state structures of two metal–pyridine–sulfate compounds, namely catena-poly[[tetrakis(pyridine-κN)iron(II)]-μ-sulfato-κ2 O:O′], [Fe(SO4)(C5H5N)4] n , (1), and catena-poly[[tetrakis(pyridine-κN)cobalt(II)]-μ-sulfato-κ2 O:O′-[tetrakis(pyridine-κN)cobalt(II)]-μ-sulfato-κ3 O,O′:O′′-[tris(pyridine-κN)cobalt(II)]-μ-sulfato-κ2 O:O′], [Co3(SO4)3(C5H5N)11] n , (2), are reported. The iron compound (1) displays a polymeric structure, with infinite chains of FeII atoms adopting octahedral N4O2 coordination environments that involve four pyridine ligands and two bridging sulfate ligands. The cob

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10

Fontaine, Xavier L. R., Timothy P. Layzell, and Bernard L. Shaw. "Rhenium multihydride heterobimetallic complexes containing bridging and chelating diphosphine ligands." Journal of the Chemical Society, Dalton Transactions, no. 3 (1994): 379. http://dx.doi.org/10.1039/dt9940000379.

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11

Gwini, Nigel, David M. Marolf, Soo Hun Yoon, et al. "Dicarboxylato ligands in osmium carbonyl sawhorse clusters: Chelating vs. bridging." Journal of Organometallic Chemistry 849-850 (November 2017): 324–31. http://dx.doi.org/10.1016/j.jorganchem.2017.01.026.

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12

Yu, Jian. "catena-Poly[[diaqua(1H-imidazo[4,5-f][1,10]phenanthroline)cobalt(II)]-μ-sulfato]". Acta Crystallographica Section E Structure Reports Online 65, № 6 (2009): m618. http://dx.doi.org/10.1107/s1600536809016419.

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The CoIIion in the title complex, [Co(SO4)(C13H8N4)(H2O)2]n, has a slightly distorted octahedral coordination environment formed by two O atoms from two symmetry-related bridging sulfate ligands, two N atoms from a bis-chelating 1H-imidazo[4,5-f][1,10]phenanthroline (IPL) ligand and two O atoms from coordinated water molecules. The bridging sulfate ligands connect CoIIions to form a one-dimensional chain along theb-axis direction. In the crystal structure, intermolecular O—H...O, O—H...N and N—H...O hydrogen bonds link the chains into a three-dimensional network.

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13

Sárosi, Imola, Menyhárt B. Sárosi, Peter Lönnecke, Luminiţa Silaghi-Dumitrescu, and Evamarie Hey-Hawkins. "Heterotopic As,S,P and As,S,As Ligands: Synthesis and Theoretical Studies." Australian Journal of Chemistry 66, no. 10 (2013): 1246. http://dx.doi.org/10.1071/ch13262.

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The heterotopic As,S,P ligands 1-AsPh2-2-StBu-3-PPh2-C6H3 (2) and 1-AsPh2-2-SH-3-PPh2-C6H3 (4) and dinucleating As,S,As ligand 1,3-(AsPh2)2-2-StBu-C6H3 (3) have been synthesized and characterized. The structural motif of these compounds suggests great potential for their use as monodentate, bidentate chelating, bidentate bridging, and tridentate ligands.

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14

Kittipong, Chainok, Phailyn Khemthong, Filip Kielar, and Yan Zhou. "Crystal structure of a mixed-ligand terbium(III) coordination polymer containing oxalate and formate ligands, having a three-dimensional fcu topology." Acta Crystallographica Section E Crystallographic Communications 72, no. 1 (2016): 87–91. http://dx.doi.org/10.1107/s205698901502397x.

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The title compound, poly[(μ3-formato)(μ4-oxalato)terbium(III)], [Tb(CHO2)(C2O4)]n, is a three-dimensional coordination polymer, and is isotypic with the LaIII, CeIIIand SmIIIanalogues. The asymmetric unit contains one TbIIIion, one formate anion (CHO2−) and half of an oxalate anion (C2O42−), the latter being completed by application of inversion symmetry. The TbIIIion is nine-coordinated in a distorted tricapped trigonal–prismatic manner by two chelating carboxylate groups from two C2O42−ligands, two carboxylate oxygen atoms from another two C2O42−ligands and three oxygen atoms from three CHO2

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15

Friães, Sofia, Sara Realista, Clara S. B. Gomes, et al. "Manganese complexes with chelating and bridging di-triazolylidene ligands: synthesis and reactivity." Dalton Transactions 50, no. 17 (2021): 5911–20. http://dx.doi.org/10.1039/d1dt00444a.

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A facile access to a series of Mn(0) and Mn(i) complexes bearing triazolylidenes with either bridging or chelating coordination mode is described. The metalation procedure and the triazolylidene N-substituents determine the type of product obtained.

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16

Richers, Casseday P., Jeffery A. Bertke та Thomas B. Rauchfuss. "Crystal structure of di-μ-hydroxido-κ4O:O-bis[bis(acetylacetonato-κ2O,O′)cobalt(III)]". Acta Crystallographica Section E Crystallographic Communications 71, № 8 (2015): 983–85. http://dx.doi.org/10.1107/s2056989015013663.

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The dinuclear title complex, [Co2(C5H7O2)4(μ-OH)2] or [Co(acac)2(μ-OH)]2, where acac is acetylacetonate, is centrosymmetric with half of the molecule per asymmetric unit. The molecular structure is a dimer of octahedrally coordinated CoIIIatoms with four O atoms from two chelating acac ligands and two O atoms from bridging hydroxide ligands. The crystal packing features weak C—H...O interactions between neighboring molecules, leading to the formation of chains normal to theacplane. The hydroxide H atoms are not involved in hydrogen bonding because of the bulky acac ligands. This is the first c

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17

Wang, Jian, Nicholas A. Morra, Hongda Zhao, et al. "Synthesis and first X-ray structures of cobalt(II) and cobalt(III) complexes bearing 2,4-dioxo-alkanoic acid dialkylamide ligands." Canadian Journal of Chemistry 87, no. 1 (2009): 328–34. http://dx.doi.org/10.1139/v08-151.

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The aerobic oxidation of 5-hydroxy pentenes to trans-tetrahydrofurans (THFs), the Mukaiyama oxidation, has in recent years emerged as a powerful tool in synthetic chemistry. In this report we describe the first crystal structures of 2,4-dioxo-alkanoic acid dialkylamide complexes for both Co(II) and Co(III) salts. The Co(II) structures show an unprecedented arrangement of atoms, with a central Co(II)(H2O)6 flanked by two Co(II) atoms each coordinated with three anionic chelating ligands. The dimeric Co(III) structures show two anionic chelating ligands and bridging hydroxyl groups.Key words: ae

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18

Mansell, S. M. "Catalytic applications of small bite-angle diphosphorus ligands with single-atom linkers." Dalton Transactions 46, no. 44 (2017): 15157–74. http://dx.doi.org/10.1039/c7dt03395h.

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Diphosphorus ligands connected by a single atom (R<sub>2</sub>PEPR<sub>2</sub>; E = CR<sub>2</sub>, CCR<sub>2</sub>and NR) give chelating ligands with very small bite-angles as well as enable access to other properties such as bridging modes and hemilability. ThisPerspectivereviews the properties of diphosphorus ligands featuring a single-atom linker and their applications in catalysis, including transformations of alkenes and transfer hydrogenation and hydrogen-borrowing reactions.

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19

Kariaka, Nataliia S., Viktoriya V. Dyakonenko, Kateryna O. Znovjyak, Svitlana V. Shishkina, and Volodymyr M. Amirkhanov. "Synthesis, crystal structure and Hirshfeld surface analysis of the tetrakis complex NaNdPyr₄(i-PrOH)₂·i-PrOH with a carbacylamidophosphate of the amide type." Acta Crystallographica Section E Crystallographic Communications 79, no. 12 (2023): 1218–22. http://dx.doi.org/10.1107/s2056989023010071.

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The tetrakis complex of neodymium(III), tetrakis{μ-N-[bis(pyrrolidin-1-yl)phosphoryl]acetamidato}bis(propan-2-ol)neodymiumsodium propan-2-ol monosolvate, [NaNd(C10H16Cl3N3O2)4(C3H8O)2]·C3H8O or NaNdPyr4(i-PrOH)2·i-PrOH, with the amide type CAPh ligand bis(N,N-tetramethylene)(trichloroacetyl)phosphoric acid triamide (HPyr), has been synthesized, crystallized and characterized by X-ray diffraction. The complex does not have the tetrakis(CAPh)lanthanide anion, which is typical for ester-type CAPh-based coordination compounds. Instead, the NdO8 polyhedron is formed by one oxygen atom of a 2-propan

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20

Liu, Lei-Lei, Yan Zhou, Ping Li, and Jiang-Ya Tian. "A two-dimensional bilayered CdIIcoordination polymer with a three-dimensional supramolecular architecture incorporating 1,2-bis(pyridin-4-yl)ethene and 2,2′-(diazenediyl)dibenzoic acid." Acta Crystallographica Section C Structural Chemistry 70, no. 2 (2014): 178–81. http://dx.doi.org/10.1107/s2053229613034591.

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In poly[[μ2-1,2-bis(pyridin-4-yl)ethene-κ2N:N′][μ2-2,2′-(diazenediyl)dibenzoato-κ3O,O′:O′′]cadmium(II)], [Cd(C14H8N2O4)(C12H10N2)]n, the asymmetric unit contains one CdIIcation, one 2,2′-(diazenediyl)dibenzoate anion (denotedL2−) and one 1,2-bis(pyridin-4-yl)ethene ligand (denoted bpe). Each CdIIcentre is six-coordinated by four O atoms of bridging/chelating carboxylate groups from threeL2−ligands and by two N atoms from two bpe ligands, forming a distorted octahedron. The CdIIcations are bridged byL2−and bpe ligands to give a two-dimensional (4,4) layer. The layers are interlinked through bri

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21

Jacob, Volker, Gottfried Huttner, Elisabeth Kaifer, and Peter Kircher. "Koordination Des Anions Von 2,4-Dicyanoglutaconsäurediethylester An Tripodeisen(Ii)-Einheiten. Die Entstehung Helikaler Strukturen." Zeitschrift für Naturforschung B 56, no. 8 (2001): 735–46. http://dx.doi.org/10.1515/znb-2001-0806.

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The anion of 2,4-dicyano glutaconic acid diethyl ester, [NCC(COOEt)CHC(COOEt)CN]- (1- ), as an α,μ;-dinitrile with a three atom spacer is a highly variable ligand capable of binding in a monodentate η1-fashion, in a bidentate chelate fashion, and as a μ2-bridging entity. TripodFe(1)2, 2, [tripod = CH3C(CH2PPh2)3] contains one chelating ligand 1- and one terminally coordinated ligand 1-- . Variable temperature NMR spectroscopy shows, that, while the structure is static at 193 K, dynamic exchange of the donor functions of chelating and terminally bonded ligands occurs at higher temperature. Trip

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22

Koroteev, Pavel S., Andrey B. Ilyukhin, Nikolay N. Efimov, Ekaterina V. Belova, Andrey V. Gavrikov, and Vladimir M. Novotortsev. "Mononuclear and binuclear lanthanide acetates with chelating and bridging triethanolamine ligands." Polyhedron 154 (November 2018): 54–64. http://dx.doi.org/10.1016/j.poly.2018.07.027.

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23

Meyer, Karen E., Dawn R. Root, Phillip E. Fanwick, and Richard A. Walton. "Dirhenium polyhydrides that contain bidentate chelating and/or bridging phosphine ligands." Inorganic Chemistry 31, no. 14 (1992): 3067–76. http://dx.doi.org/10.1021/ic00040a016.

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24

Guesmi, Salaheddine, Pierre H. Dixneuf, Nicholas J. Taylor, and Arthur J. Carty. "Heterobimetallic (RuCo) complexes with chelating and bridging Ph2PCH2PPh2 (dppm) ligands." Journal of Organometallic Chemistry 303, no. 2 (1986): C47—C51. http://dx.doi.org/10.1016/0022-328x(86)80145-0.

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25

Qiao, Ke, R. Dieter Fischer, and Gino Paolucci. "Metal-bridging vs. chelating Me2Si(C5H4)2 ligands in dinuclear complexes." Journal of Organometallic Chemistry 456, no. 2 (1993): 185–94. http://dx.doi.org/10.1016/0022-328x(93)80425-b.

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26

Akhnoukh, Talaat, Jörn Müller, Ke Qiao, Xing-Fu Li, and R. Dieter Fischer. "Metal-bridging versus chelating Me2Si(C5H4)2-ligands in binuclear complexes." Journal of Organometallic Chemistry 408, no. 1 (1991): 47–60. http://dx.doi.org/10.1016/0022-328x(91)80100-x.

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27

Braverman, Maxwell A., та Robert L. LaDuca. "catena-Poly[[bis(di-4-pyridylamine-κN)(terephthalato-κ2 O,O′)nickel(II)]-μ-di-4-pyridylamine-κ2 N:N′]". Acta Crystallographica Section E Structure Reports Online 63, № 11 (2007): m2780. http://dx.doi.org/10.1107/s1600536807051112.

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In the title compound, [Ni(C8H4O4)(C10H9N3)3] n , an NiII atom with octahedral coordination is bound by one chelating terephthalate (tp) dianion, two monodentate di-4-pyridylamine (dpa) ligands, and two bridging dpa ligands. These link the Ni atoms into one-dimensional [Ni(tp)(dpa)3] n coordination polymer chains that propagate along the b-axis direction. Interweaving pairs of chains stack in three dimensions via N—H...O hydrogen bonding.

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28

Toma, Monica, Agustín Sánchez, José Casas, et al. "New thallium(III) chloride complexes with pyridine carboxylic acids: from molecular compounds to supramolecular associations." Open Chemistry 1, no. 4 (2003): 441–64. http://dx.doi.org/10.2478/bf02475227.

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AbstractReactions of TlCl3 with picolinic acid (Hpic), nicotinic acid (Hnic), isonicotinic acid (Hinic) and 3-hydroxy-picolinic acid (H3hpic) afford the isolation of new chlorothallium(III) complexes. The compounds are characterized by IR, Raman and multinuclear NMR (1H,13C,205Tl). The molecular structures of [TlCl2(pic)(Hpic)]·0.5H2O (1), [TlCl2(nic)(Hnic)] (2), [TlCl(inic)2]·0.6C2H5OH (3) and [TlCl(3hpic)2(h3hpic)] (4) are determined by single-crystal X-ray diffraction. A distorted octahedral TlCl2N2O2 core containing the O,N-chelating ligands is achieved in the monomeric complex 1. The coor

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Karasik, Andrey A., Elvira I. Musina, Anna S. Balueva, Igor D. Strelnik, and Oleg G. Sinyashin. "Cyclic aminomethylphosphines as ligands. Rational design and unpredicted findings." Pure and Applied Chemistry 89, no. 3 (2017): 293–309. http://dx.doi.org/10.1515/pac-2016-1022.

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Abstract:Rational design of title ligands and their transition metal complexes gave the high effective catalysts for hydrogen economy and perspective “stimuli-responsive” luminescent materials. Together with the above novel cyclic aminomehtylphospine ligands have showed a row of unpredicted properties like spontaneous formation of macrocyclic molecules, unique reversible slitting of macrocycles on to the smaller cycles, rapid interconversion of the isomers catalyzed by both acids and transitional metals, bridging behavior of usually chelating ligands and unexpected high influence of handling s

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30

Cai, Hong-ling. "Poly[(μ2-azido-κ2N1:N1)[μ2-5-(8-quinolyloxymethyl)tetrazolato-κ4N1,O,N5:N4]zinc(II)]". Acta Crystallographica Section E Structure Reports Online 65, № 6 (2009): m632. http://dx.doi.org/10.1107/s1600536809016924.

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In the title compound, [Zn(C11H8N5O)(N3)]n, the Zn atom is hexacoordinated by five N atoms and one O atom in a distorted octahedral geometry. The chelating 5-(8-quinolyloxymethyl)tetrazolate ligands are approximately planar, with a dihedral angle of 3.6 (2)° between the quinoline and tetrazole planes. Adjacent Zn atoms are linked by two bridging azide ligands across a centre of inversion, and further coordination by one N atom of an adjacent tetrazole unit forms two-dimensional frameworks in (100). C—H...N interactions exist between ligands in neighbouring layers.

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Deacon, GB, BM Gatehouse, S. Nickel та SN Platts. "Organoamido- and Aryloxo-lanthanoids. III. Preparation and X-Ray Structure of Bis(μ-3,5-dimethylpyrazolato-N:N′)bis(μ-tetrahydrofuran-O)-bis[bis(η2-3,5-dimethylpyrazolato-N,N')neodymium(III)]". Australian Journal of Chemistry 44, № 4 (1991): 613. http://dx.doi.org/10.1071/ch9910613.

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Reaction of neodymium metal with bis ( pentafluorophenyl )mercury and pyrazole ( Hpz ) or 3,5-dimethylpyrazole ( Hdmpz ) in tetrahydrofuran ( thf ) yields Nd ( pz )3 or [ Nd ( dmpz )3( thf )]2. X-Ray crystallography has shown that [Nd (dmpz )3( thf )]2 [triclinic, space group Pī (No. 2), a 11.070(4), b 11.364(3), c 10.867(2)Ǻ, α 103.00(1), β 120.78(3), γ 97.68(2)°, R 0.0235, Rw 0.0247 for 5575 observed reflections] has a novel centrosymmetric dimeric structure. Each neodymium is eight-coordinate (4,4 bicapped trigonal prism) with two terminal chelating dmpz ligands [ Nd -N 2.400(2), 2.413(3),

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32

Huang, Qiuying, Weiping Tang, Yi Yang, and Wei Liu. "Syntheses, Structures and Properties of a Cobalt(II) and a Cadmium(II) Complex Based on 1-((Benzotriazol-1-yl)methyl)-1H-1,3-imidazole and 1,3-Benzenedicarboxylate Ligands." Zeitschrift für Naturforschung B 69, no. 4 (2014): 423–31. http://dx.doi.org/10.5560/znb.2014-3297.

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Two new complexes with the formulae {[Co(bmi)2(bdc)(H2O)]·2H2O}n (1) and {[Cd(bmi)(bdc) (H2O)]·DMF}n (2) (bmi = 1-((benzotriazol-1-yl)methyl)-1H-1,3-imidazole, H2bdc = 1,3-benzenedicarboxylic acid) have been synthesized and characterized by single-crystal X-ray diffraction. Complex 1 exhibits a chain structure in which both carboxylate groups of each 1,3-benzenedicarboxylate coordinate to the Co(II) ions in monodentate and chelating modes, and the bmi ligands with a monodentate mode. Complex 2 features a layered structure where both carboxylate groups of each 1,3- benzenedicarboxylate coordina

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33

Diller, Hansjörg, Helmut Keck, Andreas Kruse, and Wilhelm Kuchen. "Clusterdithiophosphinate mit kubanartigem Mo2M2S4-Kern (M = Co, W) / Clusterdithiophosphinates with Cubane-Type Mo2M2S4-Core (M = Co, W)." Zeitschrift für Naturforschung B 48, no. 5 (1993): 548–54. http://dx.doi.org/10.1515/znb-1993-0502.

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The syntheses of tetranuclear complexes Mo,W2S4L6 3 and Mo2Co2S4L2(CO)2(CH3CN)2 4 (L = R2PS2⁻; a: R = Et, b: R = Pr) containing the cubane-type Mo2M2S4 core are reported. While in 4 both Mo atoms are chelated by L, the dithiophosphinato group acts as a chelating and bridging ligand in 3. It is shown that there exist four isomers of 3 which differ not only in the function of L but also in the kind of metals which are chelated and bridged. Magnetic and NMR spectroscopic data are given. The structure of a mixed crystal of the two β-isomers of 3a containing three bridging and three chelating ligan

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34

Drover, Marcus W., Jennifer A. Love, and Laurel L. Schafer. "1,3-N,O-Complexes of late transition metals. Ligands with flexible bonding modes and reaction profiles." Chemical Society Reviews 46, no. 10 (2017): 2913–40. http://dx.doi.org/10.1039/c6cs00715e.

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35

PRICOP, Laurențiu, Maria Olimpia MICLĂUŞ, Mihaela Elena BADEA, Ana Maria HANGANU, and Mihaela GANCIAROV. "Nicotinamide, acetate and their two new complexes with Zn(II) and Cd(II)." Revue Roumaine de Chimie 69, no. 1-2 (2024): 97–105. http://dx.doi.org/10.33224/rrch.2024.69.1-2.11.

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Two new complexes of Zn(II) and Cd(II) with acetate and nicotinamide as mixed ligands were synthesized and characterized. The Zn(II) complex is mononuclear, [Zn(ac)2(NA)2] (1), while the Cd(II) is a dinuclear one, [Cd2(ac)4(NA)4].2H2O (2), where ac = acetate and NA = nicotinamide. The compounds were characterized by means of single-crystal X-ray diffraction, FTIR, 1H NMR, 13C NMR spectroscopy, thermal analysis and elemental analysis. The geometry of the metal ion is distorted tetrahedral for Zn(II) and distorted pentagonal bipyramid geometry for Cd(II). In the dinuclear complex, each metal ion

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36

Tiekink, Edward. "Exploring the Topological Landscape Exhibited by Binary Zinc-triad 1,1-dithiolates." Crystals 8, no. 7 (2018): 292. http://dx.doi.org/10.3390/cryst8070292.

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The crystal chemistry of the zinc-triad binary 1,1-dithiolates, that is, compounds of xanthate [−S2COR], dithiophosphate [−S2P(OR)2], and dithiocarbamate [−S2CNR2] ligands, is reviewed. Owing to a wide range of coordination modes that can be adopted by 1,1-dithiolate anions, such as monodentate, chelating, μ2-bridging, μ3-bridging, etc., there exists a rich diversity in supramolecular assemblies for these compounds, including examples of zero-, one-, and two-dimensional architectures. While there are similarities in structural motifs across the series of 1,1-dithiolate ligands, specific archit

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37

Vacher, Antoine, Yann Le Gal, Thierry Roisnel, et al. "Electronic Communication within Flexible Bisdithiolene Ligands Bridging Molybdenum Centers." Organometallics 38, no. 22 (2019): 4399–408. http://dx.doi.org/10.1021/acs.organomet.9b00485.

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38

Guérin, Vincent, Alain Ménard, Hannah Guernon, Odile Moutounet, and Claude Y. Legault. "From Chelating to Bridging Ligands: N-Sulfonyliminoimidazolium Ylides as Precursors to Anionic N-Heterocyclic Carbene Ligands." Organometallics 38, no. 2 (2018): 409–16. http://dx.doi.org/10.1021/acs.organomet.8b00764.

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Jin, Shouwen, та Daqi Wang. "Bis[μ-bis(imidazol-1-yl)methane]bis[aqua(oxalato)copper(II)] dihydrate". Acta Crystallographica Section E Structure Reports Online 63, № 11 (2007): m2755—m2756. http://dx.doi.org/10.1107/s1600536807050465.

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The title compound, [Cu2(C2O4)2(C7H8N4)2(H2O)2]·2H2O, features a centrosymmetric dinuclear complex. The CuII ion adopts a square-pyramidal geometry. It is coordinated by two N atoms from two bis(N-imidazolyl)methane molecules as bridging ligands, two O atoms from one oxalate anion in chelating mode and one water molecule. There are several O—H...O hydrogen bonds in the crystal structure.

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Brown, John M., Stephen J. Cook, and Alexander G. Kent. "Flexible cis- or trans- chelating biphosphine ligands derived from - or - trehalose." Tetrahedron 42, no. 18 (1986): 5097–104. http://dx.doi.org/10.1016/s0040-4020(01)88062-5.

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41

Freudenmann, Dominic, та Claus Feldmann. "[SbCl2(η2-1,4-dt)(μ2-1,4-dt)][AlCl4]: Ionic Liquid-based Synthesis of a Stibenium Cation (dt = dithiane)". Zeitschrift für Naturforschung B 68, № 10 (2013): 1090–94. http://dx.doi.org/10.5560/znb.2013-3133.

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The reaction of antimony(III) chloride with 1,4-dithiane (1,4-dt) in the ionic liquid [BMIM]Cl ([BMIM]Cl: 1-butyl-4-methylimidazolium chloride) with an excess of the Lewis acid AlCl3 results in the formation of a ligand-stabilized stibenium cation [SbCl2]+. 1,4-Dithiane simultaneously serves as a chelating η2-ligand, exhibiting a boat-like conformation, as well as a bridging μ2-ligand, exhibiting a chair-like conformation, with Sb3+ as the coordinating cation. Due to the bridging 1,4-dithiane ligands, a chain-like structural building unit 1∞[SbCl2(η2-1,4-dt)1/1(μ2-1,4-dt)2/2]+ is formed.

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Marks, Sebastian, and Peter W. Roesky. "A Dinuclear Palladium(II) Complex of the {N(SPPh2)2}- Ligand – Synthesis and Structure." Zeitschrift für Naturforschung B 68, no. 5-6 (2013): 557–60. http://dx.doi.org/10.5560/znb.2013-3066.

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The synthesis and characterization including the crystal structure of the dinuclear palladium( II) complex [(k-S,S’)-{N(SPPh2)2}Pd(m-{k2-S'',S'''})-{N(SPPh2)2}PdCl2] (1) are reported. Compound 1 was obtained from the reaction of [PdCl2(COD)] (COD=1,5-cyclooctadiene) and HN(SPPh2)2 in a 1:1 molar ratio in CH2Cl2. The {N(SPPh2)2}- ligands act both as bridging and/or terminally chelating units

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43

Pietrzak, Anna, Jannick Guschlbauer, and Piotr Kaszyński. "Structure of a Fe4O6-Heteraadamantane-Type Hexacation Stabilized by Chelating Organophosphine Oxide Ligands." Materials 14, no. 22 (2021): 6840. http://dx.doi.org/10.3390/ma14226840.

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Metal-containing heteraadamantanes are compounds of interest due to their spectroscopic and magnetic properties, which make them promising materials for non-linear optics and semiconductors. Herein we report the comprehensive structural characterization of a new coordination compound of the formula [(µ-OH′)2(µ-OH″)4(O = P(Ph2)CH2CH2(Ph2)P = O)4{Fe(t-BuOH)}4](PF6)4(Cl)2 with the chelating ligand Ph2P(O)-CH2CH2-P(O)Ph2. The compound crystallizes as a polynuclear metal complex with the adamantane-like core [Fe4O6] in the space group I-43d of a cubic system. The single-crystal XRD analysis showed

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Kung, Mayfair C., Mark V. Riofski, Michael N. Missaghi, and Harold H. Kung. "Organosilicon platforms: bridging homogeneous, heterogeneous, and bioinspired catalysis." Chem. Commun. 50, no. 25 (2014): 3262–76. http://dx.doi.org/10.1039/c3cc48766k.

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Organosilicon compounds form versatile structures such as cubic metallasiloxanes, cage-like silsesquioxanes, macromolecular nanocages, and flexible dendrimers and linear metallasiloxanes, and are useful as catalysts, ligands for metal complexes, and catalyst supports.

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45

Wang, Xiu-Jian, Liu-Chen Gui, Zhong-Su Shen, Qing-Ling Ni та Jian-Qiang Zeng. "catena-Poly[cadmium(II)-di-μ-N-oxopyridine-2-thiolato]". Acta Crystallographica Section E Structure Reports Online 62, № 4 (2006): m931—m933. http://dx.doi.org/10.1107/s1600536806010841.

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In the title complex, [Cd(C5H4NOS)2] n , (I), the Cd atom is located on an inversion center and is coordinated by two S [Cd—S = 2.5225 (6) Å] and four O [Cd—O = 2.3931 (16) and 2.5543 (17) Å] atoms in a distorted octahedral geometry. Two N-oxopyridine-2-thiolate (PySO) ligands chelate the Cd atom to occupy four sites of the equatorial plane, while two O atoms from another two PySO ligands occupy the axial sites. PySO acts as a bridging chelating ligand (S-μ2-O), connecting adjacent Cd atoms to form a polymeric chain.

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46

He, Xiyun, Jianyi Lv та Guohai Xu. "Poly[(μ3-benzene-1,4-dicarboxylato)di-μ-chlorido-(triethanolamine)dicadmium(II)]: a cadmium–halide coordination polymer with a hydrogen-bonded three-dimensional framework". Acta Crystallographica Section C Crystal Structure Communications 68, № 4 (2012): m109—m112. http://dx.doi.org/10.1107/s0108270112012668.

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The structure of the title compound, [Cd2(C8H4O4)Cl2(C6H15NO3)]n, consists of one-dimensional chains in which each centrosymmetric tetranuclear Cd4Cl4O2cluster is terminated by two chelating triethanolamine (teaH3) ligands but linked to two adjacent clusters through four bridging benzene-1,4-dicarboxylate (bdc) ligands. The tetranuclear Cd4Cl4O2clusters are held togetherviabridging Cl and O atoms. Three directional hydrogen bonds from the multi-podal hydroxy groups of the teaH3ligand stabilize and extend the one-dimensional chains into a three-dimensional framework. All three hydroxy groups of

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47

Liu, Lei-Lei, Cai-Xia Yu, Lei Hua та Lu Lin. "A three-dimensional PbIIcoordination framework: poly[[μ4-(E)-2,2′-(diazene-1,2-diyl)dibenzoato]dimethanollead(II)]". Acta Crystallographica Section C Structural Chemistry 70, № 7 (2014): 650–53. http://dx.doi.org/10.1107/s2053229614012534.

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In the title coordination polymer, [Pb(C14H8N2O4)(CH3OH)2]n, the asymmetric unit contains half of a PbIIcation, half of a 2,2′-(diazene-1,2-diyl)dibenzoate dianionic ligand (denotedL2−) and one methanol ligand. Each PbIIcentre is eight-coordinated by six O atoms of chelating/bridging carboxylate groups from fourL2−ligands and two O atoms from two terminal methanol ligands, forming a distorted dodecahedron. The [PbL2(MeOH)2] subunits are interlinkedviathe sharing of two carboxylate O atoms to form a one-dimensional [PbL2(MeOH)2]nchain. Adjacent chains are further connected byL2−ligands, giving

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48

Sava, Dorina F., Victor Ch Kravtsov, Farid Nouar, Lukasz Wojtas, Jarrod F. Eubank, and Mohamed Eddaoudi. "Quest for Zeolite-like Metal−Organic Frameworks: On Pyrimidinecarboxylate Bis-Chelating Bridging Ligands." Journal of the American Chemical Society 130, no. 12 (2008): 3768–70. http://dx.doi.org/10.1021/ja710616j.

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49

Li, Jun-Ying, та Tian-Duo Li. "catena-Poly[[dichloridodimethyltin(IV)]-μ-5-methylpyrazine-2-carboxylato-κ3 O:O′,N-[dimethyltin(IV)]]-μ-5-methylpyrazine-2-carboxylato-κ3 O,N:O′]". Acta Crystallographica Section E Structure Reports Online 63, № 3 (2007): m847—m849. http://dx.doi.org/10.1107/s1600536807007866.

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The title compound, [Sn2Cl2(CH3)4(C6H5N2O2)2], forms infinite one-dimensional zigzag chains that propagate in a helical fashion along the c axis via an Sn—O=C—O—Sn—O bridge which involves the carboxylate groups of two methylpyrazinecarboxylate ligands. These display both chelating and bridging coordination behaviour. The asymmetric unit contains two Sn atoms; one adopts a distorted trigonal–bipyramidal geometry, while the other is in a distorted pentagonal–bipyramidal configuration.

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Shotonwa, Ibukun Oluwaseun, Adebayo Ponle Oduwole, Oluwapelumi Martin Agosu, Abosede Funke Yusuf, and Simeon Okechukwu Eze. "Single and mixed dithiocarbamato metal(III) complexes (Co, Rh, and Ir): Crystal and molecular structure description and interplay." European Journal of Chemistry 15, no. 3 (2024): 291–301. http://dx.doi.org/10.5155/eurjchem.15.3.291-301.2544.

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This review focuses on the crystal and molecular structures of single and mixed dithiocarbamate ligands of cobalt, rhodium, and iridium in the +3 oxidation state. The complexities of their chelating and bridging modes come into play through modification of the substituents on the carbamate nitrogen atoms of the ligands and additional coordination of secondary phosphino-containing ligands, culminating in various applications such as biological, analytical, medicine, and catalysis. Other considerations include the geometrical coordination environments around the metal centres and their compariso

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