Catena-Poly[[aqua(4,4′-dimethyl-2,2′-bipyridine)copper(II)]-μ-fumarato-κ2O,O′:κ2O′′,O′′′-[aqua(4,4′-dimethyl-2,2′-bipyridine)copper(II)]-μ-fumarato-κO:κO′

Abstract

The title compound, [Cu(C4H2O4)(C12H12N2)(H2O)]n, has a neutral polymeric chain structure in which fumarate ligands link the Cu atoms; the chains are then linked together by hydrogen bonds. The unique CuII ion exhibits a distorted octa­hedral coordination geometry defined by three O atoms of two different centrosymmetric fumarate ligands, two N atoms from the chelating dmbpy ligand (dmbpy is 4,4′-dimethyl-2,2′-bipyridine) and one water mol­ecule. The fumarate ligands show two types of coordination modes, viz. bis-bidentate-chelating and bis-mono-O-carboxyl­ate bridging.