Syntheses and crystal structures of two 2D coordination polymers of cobalt(II) and nickel(II) with the Malonate Dianion Ligand

Abstract

Two 2D complexes, [Co(mal)(phen)(H2O)2] (1) and [Ni(mal)(phen)(H2O)2] (2) (mal = malonate dianion; phen = 1,10-phenanthroline), have been synthesized by the reaction of Co(ClO4)2·6H2O and Ni(ClO4)2·6H2O with disodium malonate and 1,10-phenanthroline in MeOH/H2O solution. Their crystal structures have been determined by X-ray diffraction. The structures of Complexes 1 and 2 show that each metal ion is coordinated by one 1,10-phenanthroline, two water molecules and a malonate ligand forming a distorted octahedral environment and each mononuclear fragment forms a 2D supramolecular network through H-bonding interactions.