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Poly[[tetra-aqua-(?(6)-2,2'-diiodo-biphenyl-4,4',5,5'-tetra-carboxyl-ato)dizinc(II)] dihydrate].

ABSTRACT: In the title compound, {[Zn(2)(C(16)H(4)I(2)O(8))(H(2)O)(4)]·2H(2)O}(n), two crystallographically independent Zn(II) atoms are each located on a twofold rotation axis. Both Zn(II) atoms are in distorted octa-hedral coordination geometries: one is coordinated by six O atoms from four carboxyl-ate groups, while the other is coordinated by two carboxyl-ate groups and four water mol-ecules. The tetra-carboxyl-ate ligand mol-ecules connect the Zn(II) atoms, completing a three-dimensional metal-organic framework. O-H?O hydrogen bonds link the metal-organic framework with the uncoord-inated water mol-ecules.

SUBMITTER: Wang Y

PROVIDER: S-EPMC2960511 | biostudies-literature | 2008 Aug

REPOSITORIES: biostudies-literature

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Poly[[tetra-aqua-(μ(6)-2,2'-diiodo-biphenyl-4,4',5,5'-tetra-carboxyl-ato)dizinc(II)] dihydrate].

Wang Yan Y Li Yue-Qin YQ Shen Ying-Zhong YZ

Acta crystallographica. Section E, Structure reports online 20080830 Pt 9

In the title compound, {[Zn(2)(C(16)H(4)I(2)O(8))(H(2)O)(4)]·2H(2)O}(n), two crystallographically independent Zn(II) atoms are each located on a twofold rotation axis. Both Zn(II) atoms are in distorted octa-hedral coordination geometries: one is coordinated by six O atoms from four carboxyl-ate groups, while the other is coordinated by two carboxyl-ate groups and four water mol-ecules. The tetra-carboxyl-ate ligand mol-ecules connect the Zn(II) atoms, completing a three-dimensional metal-organi ...[more]

PMID: 21201640

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catena-Poly[[[?-aqua-penta-aqua-dizinc(II)]-?(4)-benzene-1,2,4,5-tetra-carboxyl-ato] dihydrate].

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Project description:In the title compound, [Zn(C(6)H(3)FNO(2))(2)(H(2)O)(4)]·2H(2)O, the Zn(II) atom is octa-hedrally coordinated in a ZnO(4)N(2) environment by two 3-fluoro-pyridine-4-carboxyl-ate (3-fpy4-cbx) ligands and four water mol-ecules. The [Zn(3-fpy4-cbx)(2)(H(2)O)(4)] mol-ecules form a three-dimensional network through strong O-H⋯O and weak O-H⋯F hydrogen bonds between 3-fpy4-cbx and water mol-ecules. The crystal used for data collection was a twin, with the twin law corresponding to a 180° rotation about the real-space [001] axis. The major twin fraction refined to 0.795 (1).

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catena-Poly[bis-(4-amino-pyridinium) [[tetra-aqua-nickel(II)]-?-benzene-1,2,4,5-tetra-carboxyl-ato] dihydrate].

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Project description:In the mononuclear title compound, [Co(C(9)H(4)N(2)O(4))(2)(H(2)O)(4)]·2C(3)H(7)NO·2H(2)O, the Co(II) atom, which lies on a center of inversion, is coordinated by four water mol-ecules and two N atoms from two two symmetry-related 1H-benzimidazole-5,6-dicarboxyl-ate ligands in a distorted octa-hedral geometry. The packing is governed by inter-molecular O-H?O and N-H?O hydrogen-bonding inter-actions.

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