catena-Poly[hexaaqua-1κO,2κO,3κ(4) O-(μ(4)-3,5-dicarboxylatopyrazol-1-ido-3′:1:2:3κ(6) O (5):N (1),O (5′):N (2),O (3):O (3′))(μ(2)-3,5-dicarboxylatopyrazol-1-ido-1:2κ(4) N (2),O (3):N (1),O (5))-1,2-dicopper(II)-3-manganese(II)]

In the title compound, [Cu(2)Mn(C(5)HN(2)O(4))(2)(H(2)O)(6)](n), the Cu(II) ion is coordinated by two N atoms, two O atoms and one water O atom in a distorted square-pyramidal geometry. The Mn(II) ion is coordinated by two O atoms and four water O atoms in a distorted octa­hedral geometry. Two pyrazolyl-3,5-dicarboxyl­ate anions chelate to two copper ions, forming a dinuclear unit, which further connects the Mn(II )ions into chains extending along [100]. Both independent coordinated water mol­ecules on the Mn(II) ion are disordered in a 50:50 fashion.