title: Tetra-aqua-bis[3-(3-pyrid-yl)-5-(4-pyrid-yl)-1,2,4-triazolido]nickel(II) dihydrate.
abstract: In the title compound, [Ni(C(12)H(8)N(5))(2)(H(2)O)(4)]·2H(2)O, the Ni(II) atom is coordinated by the two N atoms [Ni-N = 2.094 (3) Å] and four O atoms [Ni-O = 2.063 (3)-2.083 (2) Å] in a distorted octa-hedral geometry. The mol-ecule is centrosymmetric and the Ni(II) atom is located on an inversion center. Inter-molecular O-H⋯N and O-H⋯O hydrogen bonds link the complex into a three-dimensional supra-molecular framework.
authors.affiliation: Department of Pharmacy, Shaoyang Medical College, Shaoyang, Hunan 422000, People's Republic of China.
authors.forename: Yun-Liang
authors.initials: YL
authors.lastname: Zhang
authors.forename: Ti-Lou
authors.initials: TL
authors.lastname: Liu
authors.forename: Shuang-Jiao
authors.initials: SJ
authors.lastname: Sun