(2,2′-Bipyridine-6,6′-dicarboxyl­ato-κ(3) N,N′,O (6))(6′-carb­oxy-2,2′-bipyridine-6-carboxyl­ato-κ(3) N,N′,O (6))rhodium(III)

The Rh(III) ion in the title compound, [Rh(C(12)H(6)N(2)O(4))(C(12)H(7)N(2)O(4))], is coordinated by four N atoms and two O atoms from two chelating ligands L and HL (H(2)L = 2,2′-bipyridine-6,6′-dicarb­oxy­lic acid) to form a distorted octa­hedral geometry. Face-to-face π-stacking inter­actions are observed between inversion-related pyridine rings, with a centroid-to-centroid distance of 3.581 (1) Å [the perpendicular distance between the rings is 3.3980 (7) Å]. Inter­molecular O—H⋯O hydrogen bonds link adjacent mol­ecules into one-dimensional supra­molecular chains along the c axis, while several inter­molecular C—H⋯O inter­actions are also observed.