(2-Amino­pyrimidine-κN (1))diaqua(pyridine-2,6-dicarboxyl­ato-κ(3) O (2),N,O (6))­nickel(II) monohydrate

The reaction of Ni(NO(3))(2)·6H(2)O with pyridine-2,6-dicarboxylic acid, NaOH and 2-amino­pyrimidine in aqueous solution leads to the formation of the title complex, [Ni(C(7)H(3)NO(4))(C(4)H(5)N(3))(H(2)O)(2)]·H(2)O. The Ni(II) ion is coordinated by one N and two O atoms of the tridentate chelating pyridine-2,6-dicarboxyl­ate anion, one heterocyclic N atom of the 2-amino­pyrimidine ligand, and two water mol­ecules. The resulting geometry for the [NiN(2)O(4)] coordination environment can be described as distorted octa­hedral. One uncoord­inated water mol­ecule completes the asymmetric unit. Extensive O—H⋯O and N—H⋯O hydrogen-bonding inter­actions between the NH(2) group of 2-amino­pyrimidine, carboxyl­ate groups, and coordinated and uncoordinated water mol­ecules contribute to the formation of a three-dimensional supra­molecular structure.