IrRh is alpha La-derived structured and crystallizes in the trigonal R-3m space group. Ir(1) is bonded to six equivalent Ir(1) and six equivalent Rh(1) atoms to form IrIr6Rh6 cuboctahedra that share corners with twelve equivalent Ir(1)Ir6Rh6 cuboctahedra, edges with twelve equivalent Ir(1)Ir6Rh6 cuboctahedra, edges with twelve equivalent Rh(1)Ir6Rh6 cuboctahedra, faces with six equivalent Ir(1)Ir6Rh6 cuboctahedra, and faces with twelve equivalent Rh(1)Ir6Rh6 cuboctahedra. Rh(1) is bonded to six equivalent Ir(1) and six equivalent Rh(1) atoms to form RhIr6Rh6 cuboctahedra that share corners with twelve equivalent Rh(1)Ir6Rh6 cuboctahedra, edges with twelve equivalent Ir(1)Ir6Rh6 cuboctahedra, edges with twelve equivalent Rh(1)Ir6Rh6 cuboctahedra, faces with six equivalent Rh(1)Ir6Rh6 cuboctahedra, and faces with twelve equivalent Ir(1)Ir6Rh6 cuboctahedra.
IrRh is alpha La-derived structured and crystallizes in the trigonal R-3m space group. Ir(1) is bonded to six equivalent Ir(1) and six equivalent Rh(1) atoms to form IrIr6Rh6 cuboctahedra that share corners with twelve equivalent Ir(1)Ir6Rh6 cuboctahedra, edges with twelve equivalent Ir(1)Ir6Rh6 cuboctahedra, edges with twelve equivalent Rh(1)Ir6Rh6 cuboctahedra, faces with six equivalent Ir(1)Ir6Rh6 cuboctahedra, and faces with twelve equivalent Rh(1)Ir6Rh6 cuboctahedra. All Ir(1)-Ir(1) bond lengths are 2.71 Å. All Ir(1)-Rh(1) bond lengths are 2.71 Å. Rh(1) is bonded to six equivalent Ir(1) and six equivalent Rh(1) atoms to form RhIr6Rh6 cuboctahedra that share corners with twelve equivalent Rh(1)Ir6Rh6 cuboctahedra, edges with twelve equivalent Ir(1)Ir6Rh6 cuboctahedra, edges with twelve equivalent Rh(1)Ir6Rh6 cuboctahedra, faces with six equivalent Rh(1)Ir6Rh6 cuboctahedra, and faces with twelve equivalent Ir(1)Ir6Rh6 cuboctahedra. All Rh(1)-Rh(1) bond lengths are 2.71 Å.