Diaquabis[5-(pyrimidin-2-yl-κN)tetrazolato-κN1]copper(II)

The title compound, [Cu(C5H3N6)(2)(H2O)(2)], is isostructural with the manganese(II) analogue, but different from the two-dimensional structures of the zinc(II), iron(II), cobalt(II) and nickel(II) complexes with the same 5-(pyrimidin-2-yl) tetrazolate ligand. Each of the two symmetry-independent but structurally similar mononuclear molecules in the crystallographic asymmetric unit occupies a special position with the Cu II atom on an inversion centre. Both Cu II atoms have a highly distorted octahedral coordination geometry formed by two trans water molecules and two chelating ligands. Intermolecular O-H center dot center dot center dot N hydrogen bonds are present, which lead to the formation of a two-dimensional network.