Monoclinic polymorph of poly[[di-μ-aqua-triaquadi-μ-oxalato-barium(II)copper(II)] monohydrate]

Abstract

A monoclinic polymorph of the title compound, {[BaCu(C2O4)2(H2O)5]·H2O}n, is reported. The structure is best described as a coordination polymer where the CuII and BaII centers are coordinated by five and nine O atoms, respectively, in capped quadratic antiprismatic and tetragonal pyramidal geometries. The polymerization arises due to the presence of bridging mono- and bidentate oxalate ligands as well as bridging water molecules. The crystal structure is consolidated by a three-dimensional network of hydrogen bonding.