Bis[bis(2,2'-bipyridine-kappa(2) N, N ')(carbonato-kappa(2) O,O ')cobalt(III)] 2-{4-[(carboxylatomethyl)carbamoyl] benzamido}acetate hexahydrate

The complex cation of the title compound, [Co(CO3)(C10H8N2)(2)] 2(C12H10N2O6)center dot 6H(2)O, contains a Co III atom with a distorted octahedral coordination environment formed by four N atoms from two bidentate 2,2'-bipyridine ligands and one bidentate carbonate anion. The asymmetric unit is completed by one-half of the 2-({4-[(carboxylatomethyl)carbamoyl] phenyl} formamido) acetate dianion, which is located on a centre of inversion, and by three water molecules. Two [Co(CO3)(C10H8N2)(2)](+) cations are connected through C-H center dot center dot center dot O contacts by the uncoordinating anions. The aromatic rings of the 2,2'-bipyridine ligands and diacetate anions are involved in pi-pi stacking and C-H center dot center dot center dot pi interactions. The centroid-centroid distances are in the range 3.4898 (4)-3.6384 (5) angstrom. The crystal structure is stabilized by further O-H center dot center dot center dot O andN-H center dot center dot center dot O hydrogen bonds, which give rise to a three-dimensional supramolecular network.