Di-μ-aqua-bis­(μ-pyridazine-4-carboxyl­ato-κ(2) N:N′)bis­[triaqua­(pyridazine-4-carboxyl­ato-κ(2) O,O′)lead(II)] dihydrate

The structure of the title compound, [Pb(2)(C(5)H(3)N(2)O(2))(4)(H(2)O)(6)]·2H(2)O, is composed of dimeric mol­ecules in which two symmetry-related Pb(2+) ions are bridged by a pair of two pyridazine-4-carboxyl­ate ligand mol­ecules via both heterocyclic N atoms and two water O atoms. Each Pb(2+) ion is also coordinated by two carboxyl­ate O atoms and three water O atoms, leading to a highly irregular coordination polyhedron around Pb(2+). The dimers are inter­connected by hydrogen bonds between coordinated and uncoordinated water mol­ecules and the carboxyl­ate O atoms. O—H⋯N inter­actions are also present.