catena-Poly[[diaqua-bis-{μ(2)-3,5-bis-[(pyridin-4-yl)methyl-amino]-benzoato}nickel] monohydrate]

In the title coordination polymer, {[Ni(C(19)H(17)N(4)O(2))(2)(H(2)O)(2)]·H(2)O}(n), the Ni(2+) cation is located on an inversion center and coordinated by two carboxyl-ate O atoms from two different 3,5-bis-(pyridin-4-yl-methyl-amino)-benzoate anions, two O atoms from two coordinated water mol-ecules and two N atoms from two different 3,5-bis-(pyridin-4-yl-methyl-amino)-benzoate anions, displaying a slightly distorted NiN(2)O(4) octa-hedral geometry. Each 3,5-bis-(pyridin-4-yl-methyl-amino)-benzoate anion acts as a μ(2)-bridge, linking different nickel ions into a chain along [010]. In the crystal, adjacent chains are further linked through N-H⋯O, O-H⋯O, O-H⋯N and C-H⋯O hydrogen bonds into a three-dimensional network. The coordinated water mol-ecules and a disordered water mol-ecule of hydration with 0.50 site occupancy play an important role in the formation of these hydrogen-bonding inter-actions.