1,3-dicarboxylato)dicerium(III)] hexahydrate]

atom completeness 24%; R factor = 0.035; wR factor = 0.091; data-to-parameter ratio = 17.1. In the title coordination polymer, {[Ce2(C8H4O5)3(H2O)9]-6H2O}n, the asymmetric unit is formed by two Ce III atoms, three 5-hydroxybenzene-1,3-dicarboxylate ligands, nine coor-dinating water molecules and six water molecules of crystal-lization. The two CeIII atoms are bridged by 5-hydroxy-benzene-1,3-dicarboxylate ligands acting in a bis-bidentate coordination mode, generating infinite chains along [101]. Both independent metal atoms are nine-coordinated, one by four O atoms from the carboxylate groups of two bridging 5-hydroxybenzene-1,3-dicarboxylate ligands and five O atoms from water molecules, generating a tricapped trigonal– prismatic geometry. The coordination around the second CeIII atom is similar, except that one of the water molecules is replaced by an O atom from an additional 5-hydroxybenzene-1,3-dicarboxylate ligand acting in a monodentate coordination mode and forming a capped square-antiprismatic geometry. Related literatur