title: Poly[mu-aqua-diaqua-mu4-malonato-mu3-malonato-barium(II)nickel(II)].
abstract: The title complex, [BaNi(C3H2O4)2(H2O)3]n, is polymeric, with two non-equivalent malonate dianions bridging one Ni atom and five different Ba atoms. The Ni atoms have a distorted octahedral (NiO6) environment, and are coordinated by four malonate O atoms in a planar arrangement and two water molecules in axial positions. The Ba atom may be described as a BaO9 polyhedron in a monocapped square-antiprismatic environment, which involves two water molecules and seven O atoms from different malonate ligands. The three-dimensional structure is further maintained and stabilized by hydrogen bonds.
authors.affiliation: School of Materials and Chemical Engineering, and Key Laboratory of Hollow Fiber Membrane Materials and Membrane Processes, Tianjin Polytechnic University, Tianjin 300160, People's Republic of China. guomlin@yahoo.com
authors.forename: Ming-Lin
authors.initials: ML
authors.lastname: Guo
authors.forename: Hou-Ying
authors.initials: HY
authors.lastname: Zhang