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Diaqua-[5,5'-dicarb-oxy-2,2'-(propane-1,3-di-yl)bis-(1H-imidazole-4-carboxyl-ato)]nickel(II) dihydrate.

ABSTRACT: In the title complex, [Ni(C(13)H(10)N(4)O(8))(H(2)O)(2)]·2H(2)O, the Ni(2+) cation is six-coordinated by two N atoms and two O atoms from the tetra-dentate anion in equatorial positions and by two water O atoms in axial positions, leading to a distorted octa-hedral environment. The central C atom of the propanediyl unit is disordered over two sites in a 0.531?(6):0.469?(6) ratio. In the crystal, adjacent mol-ecules are linked through O-H?O and N-H?O hydrogen-bonding inter-actions into a three-dimensional network.

SUBMITTER: Jin GH

PROVIDER: S-EPMC3151826 | biostudies-other | 2011 Jul

REPOSITORIES: biostudies-other

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Diaqua-[5,5'-dicarb-oxy-2,2'-(propane-1,3-di-yl)bis-(1H-imidazole-4-carboxyl-ato)]nickel(II) dihydrate.

Jin Guang-Hua GH Li Xifeng X Hu Chunyue C Hu Lixin L

Acta crystallographica. Section E, Structure reports online 20110625 Pt 7

In the title complex, [Ni(C(13)H(10)N(4)O(8))(H(2)O)(2)]·2H(2)O, the Ni(2+) cation is six-coordinated by two N atoms and two O atoms from the tetra-dentate anion in equatorial positions and by two water O atoms in axial positions, leading to a distorted octa-hedral environment. The central C atom of the propanediyl unit is disordered over two sites in a 0.531 (6):0.469 (6) ratio. In the crystal, adjacent mol-ecules are linked through O-H⋯O and N-H⋯O hydrogen-bonding inter-actions into a three-di ...[more]

PMID: 21836961

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Diaqua-[5,5'-dicarb-oxy-2,2'-(propane-1,3-di-yl)bis-(1H-imidazole-4-carboxyl-ato)]manganese(II).

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Project description:In the title compound, [Ni(C(12)H(6)N(2)O(4))(H(2)O)(2)], the Ni(II) atom (site symmetry 2) displays a distorted cis-NiN(2)O(4) octa-hedral coordination geometry with two N atoms and two O atoms of the tetra-dentate 2,2'-bipyridine-6,6'-dicarboxyl-ate ligand in the equatorial plane and two water mol-ecules in axial positions. The complete dianionic ligand is generated by crystallographic twofold symmetry. In the crystal, a two-dimensional supra-molecular structure parallel to (001) is formed through O-H?O hydrogen-bond inter-actions between the coordinated water mol-ecules and the O atoms of nearby carboxyl-ate groups.

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Diaqua-bis-(1H-imidazole-4-carboxyl-ato-κN,O)zinc.

Project description:In the title compound, [Zn(C(4)H(3)N(2)O(2))(2)(H(2)O)(2)], the Zn(II) ion is situated on a twofold rotation axis and exhibits a distorted octa-hedral coordination configuration. The equatorial plane contains two cis-oriented bidentate 1H-imidazole-4-carboxyl-ate ligands and the axial positions are occupied by two coordinated water mol-ecules. In the crystal structure, inter-molecular O-H⋯O and N-H⋯O hydrogen bonds link the mol-ecules into a three-dimensional supra-molecular network. There are π-π inter-actions between the imidazole rings, with a centroid-to-centroid distance of 3.504 (3) Å.

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