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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 complex, [Ni(C(4)H(3)N(2)O(2))(2)(H(2)O)(2)], the Ni(II) ion is located on an inversion center and shows a distorted octa-hedral geometry, defined by two N,O-bidentate 1H-imidazole-4-carboxyl-ate ligands in the equatorial plane and two water mol-ecules in the axial positions. Inter-molecular N-H?O hydrogen bonds link the complex mol-ecules into layers parallel to (10[Formula: see text]), which are further linked into a three-dimensional supra-molecular network through O-H?O hydrogen bonds.

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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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