title: Poly[[diaqua-μ(2)-4,4'-bipyridyl-μ(2)-o-phthalato-nickel(II)] dihydrate].
abstract: In the title layer complex, {[Ni(C(8)H(4)O(4))(C(10)H(8)N(2))(H(2)O)(2)]·2H(2)O}(n), the Ni atom has a distorted octa-hedral environment, defined by the phthalate and 4,4'-bipyridyl ligands which link the Ni atoms, forming a square lattice in the bc plane. This extends into a three-dimensional supra-molecular network through O-H⋯O hydrogen-bonding inter-actions. The Ni atom lies on, and both ligands are bis-ected by, a crystallographic twofold axis.
authors.forename: Xiao
authors.initials: X
authors.lastname: Zhang
authors.forename: Zhihui
authors.initials: Z
authors.lastname: Yi
authors.forename: Wujiong
authors.initials: W
authors.lastname: Xia
authors.forename: Chao
authors.initials: C
authors.lastname: Yang
authors.forename: Bing
authors.initials: B
authors.lastname: Li