Bis(μ-pyridazine-3-carboxyl­ato-κ(2) O:O′)bis­[aqua­dioxido(pyridazine-3-carboxyl­ato-κ(2) N (2),O)uranium(VI)] dihydrate

The structure of the binuclear title complex, [U(2)(C(5)H(3)N(2)O(2))(4)O(4)(H(2)O)(2)]·2H(2)O, is composed of centrosymmetric dimers in which each UO(2) (2+) ion is coordinated by two ligand mol­ecules. One donates its N,O-bonding group and the other donates both carboxyl­ate O atoms. Each of the latter bridges adjacent uranyl ions. The coordination environment of the metal center is a distorted penta­gonal bipyramid. The dimers are inter­connected by O—H⋯O hydrogen bonds between coordinated and uncoordinated water mol­ecules and carboxyl­ate O atoms. An intra­molecular O—H⋯N inter­action is also present.