catena-poly[[bis(1-ethyl-1H-imidazole-κN3)copper(II)]-μ-benzene-1,4-dicarboxylato]

In the title compound, [Cu(C8H4O4)(C5H8N2)2]n, each CuII atom is four-coordinated by two carboxyl-ate O atoms from two different benzene-1,4-dicarboxyl-ate (1,4-BDC) ligands and two N atoms from two 1-ethyl-1H-imidazole (EI) ligands in a slightly distorted square-planar coordination environment. There are two Cu atoms, both with site symmetry . Each 1,4-BDC acts as a bis-monodentate ligand that binds two CuII atoms, thus forming two unique chains. The EI ligands are attached on both sides of the chains. © International Union of Crystallography 2007.