RhCo3 is beta-derived structured and crystallizes in the hexagonal P-6m2 space group. Rh(1) is bonded to six equivalent Rh(1) and six equivalent Co(2) atoms to form RhCo6Rh6 cuboctahedra that share corners with six equivalent Rh(1)Co6Rh6 cuboctahedra, corners with twelve equivalent Co(1)Co12 cuboctahedra, edges with six equivalent Rh(1)Co6Rh6 cuboctahedra, edges with twelve equivalent Co(2)Co9Rh3 cuboctahedra, faces with two equivalent Co(1)Co12 cuboctahedra, faces with six equivalent Rh(1)Co6Rh6 cuboctahedra, and faces with twelve equivalent Co(2)Co9Rh3 cuboctahedra. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to six equivalent Co(1) and six equivalent Co(2) atoms to form CoCo12 cuboctahedra that share corners with six equivalent Co(1)Co12 cuboctahedra, corners with twelve equivalent Rh(1)Co6Rh6 cuboctahedra, edges with six equivalent Co(1)Co12 cuboctahedra, edges with twelve equivalent Co(2)Co9Rh3 cuboctahedra, faces with two equivalent Rh(1)Co6Rh6 cuboctahedra, faces with six equivalent Co(1)Co12 cuboctahedra, and faces with twelve equivalent Co(2)Co9Rh3 cuboctahedra. In the second Co site, Co(2) is bonded to three equivalent Rh(1), three equivalent Co(1), and six equivalent Co(2) atoms to form distorted CoCo9Rh3 cuboctahedra that share corners with eighteen equivalent Co(2)Co9Rh3 cuboctahedra, edges with six equivalent Rh(1)Co6Rh6 cuboctahedra, edges with six equivalent Co(1)Co12 cuboctahedra, edges with six equivalent Co(2)Co9Rh3 cuboctahedra, faces with six equivalent Rh(1)Co6Rh6 cuboctahedra, faces with six equivalent Co(1)Co12 cuboctahedra, and faces with eight equivalent Co(2)Co9Rh3 cuboctahedra.
RhCo3 is beta-derived structured and crystallizes in the hexagonal P-6m2 space group. Rh(1) is bonded to six equivalent Rh(1) and six equivalent Co(2) atoms to form RhCo6Rh6 cuboctahedra that share corners with six equivalent Rh(1)Co6Rh6 cuboctahedra, corners with twelve equivalent Co(1)Co12 cuboctahedra, edges with six equivalent Rh(1)Co6Rh6 cuboctahedra, edges with twelve equivalent Co(2)Co9Rh3 cuboctahedra, faces with two equivalent Co(1)Co12 cuboctahedra, faces with six equivalent Rh(1)Co6Rh6 cuboctahedra, and faces with twelve equivalent Co(2)Co9Rh3 cuboctahedra. All Rh(1)-Rh(1) bond lengths are 2.58 Å. All Rh(1)-Co(2) bond lengths are 2.59 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to six equivalent Co(1) and six equivalent Co(2) atoms to form CoCo12 cuboctahedra that share corners with six equivalent Co(1)Co12 cuboctahedra, corners with twelve equivalent Rh(1)Co6Rh6 cuboctahedra, edges with six equivalent Co(1)Co12 cuboctahedra, edges with twelve equivalent Co(2)Co9Rh3 cuboctahedra, faces with two equivalent Rh(1)Co6Rh6 cuboctahedra, faces with six equivalent Co(1)Co12 cuboctahedra, and faces with twelve equivalent Co(2)Co9Rh3 cuboctahedra. All Co(1)-Co(1) bond lengths are 2.58 Å. All Co(1)-Co(2) bond lengths are 2.45 Å. In the second Co site, Co(2) is bonded to three equivalent Rh(1), three equivalent Co(1), and six equivalent Co(2) atoms to form distorted CoCo9Rh3 cuboctahedra that share corners with eighteen equivalent Co(2)Co9Rh3 cuboctahedra, edges with six equivalent Rh(1)Co6Rh6 cuboctahedra, edges with six equivalent Co(1)Co12 cuboctahedra, edges with six equivalent Co(2)Co9Rh3 cuboctahedra, faces with six equivalent Rh(1)Co6Rh6 cuboctahedra, faces with six equivalent Co(1)Co12 cuboctahedra, and faces with eight equivalent Co(2)Co9Rh3 cuboctahedra. All Co(2)-Co(2) bond lengths are 2.58 Å.