Acta Cryst. (2007). E63, m1654-m1655  [ doi:10.1107/S1600536807022416 ]

catena-Poly[[[bis(2-methyl-1H-imidazole-N³)cadmium(II)]--cyclohexane-1,4-dicarboxylato] dihydrate]

Y.-J. Li

Abstract: In the title compound, {[Cd(C₈H₁₀O₂)(C₄H₆N₂)₂]·2H₂O}_n, each Cd^II atom is six-coordinated by two N atoms from two 2-methyl-1H-imidazole (mi) molecules and four O atoms from two cyclohexane-1,4-dicarboxylate (1,4-chdc) ligands in a distorted octahedral environment. The asymmetric unit consists of two independent mononuclear complex units and two solvent water molecules. Each 1,4-chdc acts as a bis-chelating ligand that binds two Cd^II atoms, thus forming two unique helical chains. These chains are decorated with mi ligands alternately on the two sides. Furthermore, O-HO and N-HO hydrogen bonds link the chains together, forming a three-dimensional supramolecular structure. There are weak - interactions between mi ligands in neighbouring chains at (x, y, z) and (-x, -y, 2 - z), with an interplanar distance of 3.62 (2) Å.

Online 23 May 2007

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