title: Poly[tetraaquadi-mu3-malonato-calcium(II)zinc(II)].
abstract: The title complex, [CaZn(C3H2O4)2(H2O)4]n, is a two-dimensional polymer and consists of CaO8 and ZnO6 polyhedra linked together by malonate ligands. The Ca(II) cation, lying on a twofold axis, is coordinated by two water molecules and six malonate O atoms. The Zn(II) cation, which lies on an inversion center in an octahedral environment, is coordinated by four malonate O atoms in an equatorial arrangement and two water molecules in axial positions. The Zn-O and Ca-O bond lengths are in the ranges 2.0445 (12)-2.1346 (16) and 2.3831 (13)-2.6630 (13) angstroms, respectively. The structure comprises alternating layers along the [101] plane, the shortest Zn...Zn distance being 6.8172 (8) angstroms. The whole three-dimensional structure is maintained and stabilized by the presence of hydrogen bonds.
authors.affiliation: Department of Chemistry, Central China Normal University, Wuhan, Hubei 430079, People's Republic of China.
authors.forename: Xu-Cheng
authors.initials: XC
authors.lastname: Fu
authors.forename: Ming-Tian
authors.initials: MT
authors.lastname: Li
authors.forename: Xiao-Yan
authors.initials: XY
authors.lastname: Wang
authors.forename: Cheng-Gang
authors.initials: CG
authors.lastname: Wang
authors.forename: Xiao-Tao
authors.initials: XT
authors.lastname: Deng
mesh_terms: D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008958:Models, Molecular; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; C520086:Poly(tetraaquadi-mu3-malonato-calcium(II)zinc(II)); D011108:Polymers