Poly[di-μ-glycinatocopper(II)]: A twodimensional coordination polymer

Abstract

The title coordination polymer, [Cu(C 2H 4NO 2) 2] n, is twodimensional and consists of a distorted octahedral copper coordination polyhedron with two bidentate glycine ligands chelating the metal through the O and N atoms in a transsquareplanar configuration. The two axial coordination sites are occupied by carbonyl O atoms of neighbouring glycine molecules. The Cu - O distances for the axial O atoms [2.648 (2) and 2.837 (2) Å] are considerably longer than both the Cu - O [1.9475 (17) and 1.9483 (18) Å] and Cu - N [1.988 (2) and 1.948 (2) Å] distances in the equatorial plane, which indicates a strong Jahn-Teller effect. In the crystal, the twodimensional networks are arranged parallel to (001) and are linked via N - H⋯O hydrogen bonds, forming a threedimensional arrangement.