Crystal structures of μ-oxalato-bis[azido(histamine)copper(II)] and μ-oxalato-bis[(dicyanamido)(histamine)copper(II)]

Abstract

The title compounds are two closely related oxalate-bridged dinuclear copper complexes. The histamine ligand is in a gauche conformation and coordinates to copper ions in a bidentate chelating fashion. The dinuclear complexes are linked to form three-dimensional networks via different types of hydrogen-bond and weak inter­actions.