A Copper–Nitromalonamide Complex

Bis(2-nitromalonamide-O,O')copper(II), [Cu{O 2 NC(CONH 2 ) 2 } 2 ], is a neutral complex. The Cu atom is octahedrally coordinated to six O atoms from four ligands and is situated on a centre of symmetry. Each ligand coordinates to the Cu atom via relatively short bonds from the amide O atoms. Weak bonds to Cu originate from one of the O atoms of the nitro group. The Cu complex is bent around lines 'drawn' through the amide O atoms of each ligand.