(2,2′-Bipyridine-6,6′-dicarboxylato-κ3N,N′,O6)(6′-carboxy-2,2′-bipyridine-6-carboxylato-κ3N,N′,O6)rhodium(III)

Abstract

The RhIII ion in the title compound, [Rh(C12H6N2O4)(C12H7N2O4)], is coordinated by four N atoms and two O atoms from two chelating ligands L and HL (H2L = 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.