title: A double-layered zinc(II) coordination polymer with the ligand 3,5-bis(carboxylatomethoxy)benzoate.
abstract: In the title compound, poly[hexaaquabis[mu(4)-3,5-bis(carboxylatomethoxy)benzoato]trizinc(II)], [Zn(3)(C(11)H(7)O(8))(2)(H(2)O)(6)](n), there are two crystallographically distinct Zn(II) cations which are bridged by polycarboxylate ligands in a mu(4)-bridging mode. A pair of ligands bridges adjacent Zn atoms to give centrosymmetric dimetal building blocks which act as four-connected nodes to be further interlinked into a two-dimensional double-layered framework with (4,4) topology. Other Zn atoms, lying on inversion centres, occupy the cavities of this topological structure. This submission shows a versatile polycarboxylate ligand with rigid and flexible functional groups, the co-operation and complementarity of which would meet the coordination requirements of a variety of topological structures.
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, People's Republic of China.
authors.forename: Zhong-Min
authors.initials: ZM
authors.lastname: Cen
authors.forename: Fa-Si
authors.initials: FS
authors.lastname: Li
authors.forename: Qing-Ling
authors.initials: QL
authors.lastname: Ni
authors.forename: Xiu-Jian
authors.initials: XJ
authors.lastname: Wang
authors.forename: Bin
authors.initials: B
authors.lastname: Li