Isolation and characterisation of a novel thermally stable octahedral bicarbonato complex of bis(2-picolylamine) copper(II): identification of rare monodentate coordination

A novel bicarbonate complex, [Cu(C5H4NCH2NH2)(2)(OCO2H)(2)] (1), has been synthesised under controlled pH and characterised by IR, UV-Vis spectroscopy, magnetic moment and thermal analysis; the coordination environment around the metal centre is elongated octahedral with two chelated bidentate amines in the square plane and the axial sites are occupied by two monodentate bicarbonate ligands.