Di­aqua-trans-bis­(pyridazine-3-carboxyl­ato-κ2O,N)­zinc(II)

In the structure of the title compound, [Zn(C5H3N2O2)2(H2O)2], the ZnII ion is located on a centre of symmetry. The coordin­ation around the ZnII atom is slightly distorted octahedral, with two equatorial pyridazine-3-carboxyl­ate ligands in a trans arrangement. A pyridazine-ring N atom [Zn—N = 2.0742 (15) A] and one carboxyl­ate O atom [Zn1—O2 = 2.0744 (14) A] from each ligand coordinate to the metal. Two water O atoms [Zn—O = 2.1934 (17) A] are coordinated in axial positions. The coordinated water mol­ecules act as hydrogen-bond donors to the unbonded carboxyl­ate O atoms in adjacent monomers, forming a three-dimensional network.