title: Two different one-dimensional Cd(II) halide coordination polymers constructed through bridging carboxylate ligands.
abstract: Two cadmium halide complexes, catena-poly[[chloridocadmium(II)]-di-μ-chlorido-[chloridocadmium(II)]-bis[μ2-4-(dimethylamino)pyridin-1-ium-1-acetate]-κ(3)O:O,O';κ(3)O,O':O], [CdCl2(C9H12N2O2)]n, (I), and catena-poly[1-cyanomethyl-1,4-diazoniabicyclo[2.2.2]octane [[dichloridocadmium(II)]-μ-oxalato-κ(4)O(1),O(2):O(1'),O(2')] monohydrate], {(C8H15N3)[CdCl2(C2O4)]·H2O}n, (II), were synthesized in aqueous solution. In (I), the Cd(II) cation is octahedrally coordinated by three O atoms from two carboxylate groups and by one terminal and two bridging chloride ligands. Neighbouring Cd(II) cations are linked together by chloride anions and bridging O atoms to form a one-dimensional zigzag chain. Hydrogen-bond interactions are involved in the formation of the two-dimensional network. In (II), each Cd(II) cation is octahedrally coordinated by four O atoms from two oxalic acid ligands and two terminal Cl(-) ligands. Neighbouring Cd(II) cations are linked together by oxalate groups to form a one-dimensional anionic chain, and the water molecules and organic cations are connected to this one-dimensional zigzag chain through hydrogen-bond interactions.
authors.affiliation: Ordered Matter Science Research Center, Southeast University, Nanjing 211189, People's Republic of China.
authors.forename: Xue-Li
authors.initials: XL
authors.lastname: Hou
authors.affiliation: Ordered Matter Science Research Center, Southeast University, Nanjing 211189, People's Republic of China.
authors.forename: Hui-Ting
authors.initials: HT
authors.lastname: Wang
keywords: bridging chloride; cadmium(II) complex; carboxylate groups; crystal structure; hydrogen-bonding interactions; one-dimensional zigzag chains; organic cations; phase-transition materials; π–π interactions