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Catena-Poly[[bis-[2-(2-pyrid-yl)-1-H-imidazole-?N,N]cadmium]-?-benzene-1,3-dicarboxyl-ato-?O:O].

ABSTRACT: In the title coordinaltion polymer, [Cd(C(8)H(4)O(4))(C(8)H(7)N(3))(2)](n), the Cd(II) atom, lying on a twofold rotation axis, is six-coordinated by two carboxyl-ate O atoms from two benzene-1,3-dicarboxyl-ate (m-BDC) ligands and four N atoms from two chelating 2-(2-pyrid-yl)imidazole mol-ecules, forming a slightly distorted octa-hedral geometry. The m-BDC ligand is located over a twofold rotation axis. The Cd(II) atoms are bridged by the m-BDC ligands, leading to a wave-shaped chain structure along [010]. N-H?O hydrogen bonds connect the chains.

SUBMITTER: Li CJ

PROVIDER: S-EPMC3051460 | biostudies-other | 2011

REPOSITORIES: biostudies-other

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catena-Poly[[bis-[2-(2-pyrid-yl)-1-H-imidazole-κN,N]cadmium]-μ-benzene-1,3-dicarboxyl-ato-κO:O].

Li Chun-Jiang CJ Lu Jing-Mei JM Tu Fan F Chen Jing-Ying JY Li Yu-Jia YJ

Acta crystallographica. Section E, Structure reports online 20110129 Pt 2

In the title coordinaltion polymer, [Cd(C(8)H(4)O(4))(C(8)H(7)N(3))(2)](n), the Cd(II) atom, lying on a twofold rotation axis, is six-coordinated by two carboxyl-ate O atoms from two benzene-1,3-dicarboxyl-ate (m-BDC) ligands and four N atoms from two chelating 2-(2-pyrid-yl)imidazole mol-ecules, forming a slightly distorted octa-hedral geometry. The m-BDC ligand is located over a twofold rotation axis. The Cd(II) atoms are bridged by the m-BDC ligands, leading to a wave-shaped chain structure a ...[more]

PMID: 21522919

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catena-Poly[[aqua-(imidazole)-cadmium(II)]-?(3)-benzene-1,3-dicarboxyl-ato].

Project description:In the title compound, [Cd(C(8)H(4)O(4))(C(3)H(4)N(2))(H(2)O)](n), the Cd(II) ion is seven-coordinated by five O atoms from three crystallographically independent benzene-1,3-carboxylate ligands, one N atom from the imidazole ligand and one coordinated water mol-ecule. Neighboring Cd(II) ions are bridged by the benzene-1,3-dicarboxyl-ate ligands, forming a zigzag polymeric chain structure. These chains are further extended into a three-dimensional supra-molecular structure through O-H?O and N-H?O hydrogen bonds.

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catena-Poly[[bis-(pyridine-?N)zinc(II)]-?-benzene-1,4-dicarboxyl-ato-?O:O].

Project description:In the title coordination polymer, [Zn(C(8)H(4)O(4))(C(5)H(5)N)(2)](n), the Zn(II) atom, located on a twofold rotation axis, is tetra-coordinated by two monodentate O atoms from two different carboxyl-ate groups and two pyridyl N atoms, forming a distorted tetra-hedral geometry. The Zn(II) atoms are bridged by terephthalate ligands, generating an infinite zigzag chain along [101].

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Project description:The title compound, [Cd(C(8)H(8)O(5))(C(3)H(4)N(2))(2)](n), was synthesized by the reaction of 7-oxabicyclo-[2.2.1]heptane-2,3-dicarboxylic anhydride, cadmium acetate and imidazole. The Cd(II) atom is seven-coordinated in a distorted penta-gonal-bipyramidal configuration by five O atoms from carboxyl-ate groups of three 7-oxabicyclo-[2.2.1]heptane-2,3-dicarboxylate ligands and two N atoms from two imidazole ligands. The crystal structure is stabilized by N-H?O and C-H?O hydrogen-bonding and C-H?? inter-actions.

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catena-Poly[diimidazolium [bis-(?-pyridine-2,5-dicarboxyl-ato)bis-[diaqua-praseodymate(III)]]-bis-(?-pyridine-2,5-dicarboxyl-ato)].

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catena-Poly[[bis-(1H-benzimidazole-κN)palladium(II)]-μ-benzene-1,4-dicarboxyl-ato-κO:O].

Project description:In the title compound, [Pd(C(8)H(4)O(4))(C(7)H(6)N(2))(2)](n), the Pd atom is tetra-coordinated by two carboxyl-ate O atoms from two benzene-1,4-dicarboxyl-ate (bdc) dianions and two N atoms from two benzimidazole ligands, resulting in a slightly distorted tetra-hedral PdO(2)N(2) geometry. The bdc ligand acts as a bridge, linking the Pd atoms into a chain. Inter-chain N-H⋯O hydrogen bonds help to stabilize the crystal structure.

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