Acta Cryst. (2005). E61, m958-m960  [ doi:10.1107/S1600536805011979 ]

catena-Poly[[[bis(2-pyridinecarboxylato-²N,O)copper(II)]--benzene-1,2,4,5-tetracarboxylic acid] dihydrate]

L. Wang, D.-H. Zhou and J.-P. Zhang

Abstract: In the title compound, {[Cu(C₆H₄NO₂)₂(C₁₀H₆O₈)]·2H₂O}_n, the Cu^II atom lies on an inversion centre in a distorted octahedral coordination environment. Two 2-carboxylatopyridine ligands chelate to each copper centre through their N and carboxylate O atoms. The axial coordination positions are occupied by carboxylate O atoms from different fully protonated 1,2,4,5-benzenetetracarboxylic acid molecules. These also bridge adjacent copper centres to form infinite one-dimensional chains. Hydrogen bonds formed by the ligand O atoms and water molecules link the individual chains.

Online 27 April 2005

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