Poly[[bis(μ2-6-methylpyrazin-2-carboxylato-κ3N1,O:N4)copper(II)] dihydrate]

In the title compound, {[Cu(C6H5N2O2)(2)]center dot 2H(2)O}(n), the Cu-II ion (site symmetry (1) over bar) is coordinated by two N,O-bidentate ligands and two N-monodentate ligands in a distorted CuO2N4 octahedral geometry. Each anion acts as a bridge between two cations, thus forming a two-dimensional polymeric network parallel to the ab plane. The packing is consolidated by O-H center dot center dot center dot O hydrogen bonds. One of the O atoms of the ligand and both water molecules are disordered.