(BENZIMIDAZOLE-N-3)COPPER(II)-MU-MALONATO-O,O''O']

The title compound forms a polymeric chain, [CU(C3H2-O-4)(C7H6N2)(H2O) ]infinity. A malonate ion adopts a bridging position between two Cu at oms, coordinating via three of its O atoms. Two form a six-membered ch elate ring, the third coordinates to the neighbouring Cu atom. The squ are-pyramidal Cu-II coordination comprises one N and three O atoms as the base, and an H2O molecule in the apical position. The equalization of C-O bonds of both carboxylate groups and a differentiation of Cu-O bond lengths is observed.