Bis[bis­(2,2′-bipyridine-κ(2) N,N′)chloridocopper(II)] bis­(μ-2,6-pyridine­dicarboxyl­ato)-κ(4) O (2),N,O (6):O (6);κ(4) O (2):O (2),N,O (6)-bis­[aqua­dichloridobismuthate(III)] penta­hydrate

In the title compound, [CuCl(C(10)H(8)N(2))(2)](2)[Bi(2)Cl(4)(C(7)H(3)NO(4))(2)(H(2)O)(2)]·5H(2)O, the dianion [Bi(2)Cl(4)(C(7)H(3)NO(4))(2)(H(2)O)(2)](2−) is located about an inversion center. The Cu(II) atom of the cation is coordinated by four N atoms of the two chelating 2,2′-bypyridine ligands and one Cl(−) ion, completing a distorted trigonal–bipyramidal coordination environment. In the anion, each Bi(III) atom is seven-coordinate and is bonded to a tridentate pyridine-2,6-dicarboxyl­ate ligand, a water mol­ecule, two chloride ions and a bridging carboxyl­ate O atom of another carboxyl­ate ligand. The coordination geometry of Bi(III) is distorted penta­gonal–bipyramidal with the Cl(−) ions located in axial positions. The structure of the dianion is additionally stabilized by an intra­molecular O—H⋯O hydrogen bond between the coordinated water mol­ecule and carboxyl­ate O atom. In the crystal, O—H⋯O hydrogen bonds occur . The H atoms of the solvent water mol­ecules could not be located.