title: catena-Poly[[[tetra-aqua-zinc(II)]-μ-4,4'-bipyridine-κN:N'] benzene-1,4-di-carboxyl-ate].
abstract: In the title compound, {[Zn(C(10)H(8)N(2))(H(2)O)(4)](C(8)H(4)O(4))}(n), the Zn(II) atoms, lying on a twofold rotation axis, are bridged by 4,4'-bipyridine ligands, resulting in a linear chain along the b axis. In the chain, the Zn(II) atom adopts a slightly distorted octa-hedral coordination geometry involving four water mol-ecules at the equatorial positions. The noncoordinated benzene-1,4-dicarboxyl-ate anion, which is also located on a twofold rotation axis, bridges adjacent chains through O-H⋯O hydrogen bonds, forming a three-dimensional supra-molecular network.
authors.forename: Ming-Bo
authors.initials: MB
authors.lastname: Ruan
authors.forename: Jian-Cheng
authors.initials: JC
authors.lastname: Deng
authors.forename: Zhi-Gang
authors.initials: ZG
authors.lastname: Li
authors.forename: Jing-Wei
authors.initials: JW
authors.lastname: Xu