catena-Poly[[triaquachlorido-μ3-malonato-cerium(III)] hemihydrate]

Abstract

The asymmetric unit of the title compound, {[Ce(C3H2O4)Cl(H2O)3]·0.5H2O}n, contains a Ce3+ atom coordinated by a chloride anion, three water molecules and a malonate ligand, and one water molecule of crystallization with a factor of occupancy of 50%. The malonate ligand is bonded to three different symmetry-related metal atoms yielding a one-dimensional coordination polymer running parallel to the a axis. A supramolecular network composed of strong and highly directional O—H...O and O—H...Cl hydrogen bonds ensures a close and effective packing of adjacent polymeric chains.