title: Diaqua-[5,5'-dicarb-oxy-2,2'-(propane-1,3-di-yl)bis-(1H-imidazole-4-carboxyl-ato)]nickel(II) dihydrate.
abstract: In the title complex, [Ni(C(13)H(10)N(4)O(8))(H(2)O)(2)]·2H(2)O, the Ni(2+) cation is six-coordinated by two N atoms and two O atoms from the tetra-dentate anion in equatorial positions and by two water O atoms in axial positions, leading to a distorted octa-hedral environment. The central C atom of the propanediyl unit is disordered over two sites in a 0.531 (6):0.469 (6) ratio. In the crystal, adjacent mol-ecules are linked through O-H⋯O and N-H⋯O hydrogen-bonding inter-actions into a three-dimensional network.
authors.forename: Guang-Hua
authors.initials: GH
authors.lastname: Jin
authors.forename: Xifeng
authors.initials: X
authors.lastname: Li
authors.forename: Chunyue
authors.initials: C
authors.lastname: Hu
authors.forename: Lixin
authors.initials: L
authors.lastname: Hu