Tris(2,2′-bipyridine-κ2N:N′)cobalt(III) trichloride tetrahydrate

Abstract

The title compound, [Co(C10H8N2)3]Cl3·4H2O, contains discrete [Co(bpy)3]3+ cations (bpy is 2,2′-bipyridine), Cl− anions and water molecules. The [Co(bpy)3]3+ complex cation exhibits C2 symmetry with the twofold axis through the central Co atom and bisecting one bpy ligand and one of the Cl− anions. The four solvent water molecules and the remaining two Cl− anions lie on a mirror plane. Hydrogen-bond interactions define a two-dimensional layer structure parallel to (100), which consists of seven-membered [Cl2(H2O)5], eight-membered [Cl4(H2O)4] and ten-membered [Cl2(H2O)8] rings.