Pu(Ce) crystallizes in the trigonal R-3m space group. Pu(1) is bonded to six equivalent Pu(1) and six equivalent Ce(1) atoms to form PuCe6Pu6 cuboctahedra that share corners with twelve equivalent Pu(1)Ce6Pu6 cuboctahedra, edges with twelve equivalent Pu(1)Ce6Pu6 cuboctahedra, edges with twelve equivalent Ce(1)Ce6Pu6 cuboctahedra, faces with six equivalent Pu(1)Ce6Pu6 cuboctahedra, and faces with twelve equivalent Ce(1)Ce6Pu6 cuboctahedra. Ce(1) is bonded to six equivalent Pu(1) and six equivalent Ce(1) atoms to form CeCe6Pu6 cuboctahedra that share corners with twelve equivalent Ce(1)Ce6Pu6 cuboctahedra, edges with twelve equivalent Pu(1)Ce6Pu6 cuboctahedra, edges with twelve equivalent Ce(1)Ce6Pu6 cuboctahedra, faces with six equivalent Ce(1)Ce6Pu6 cuboctahedra, and faces with twelve equivalent Pu(1)Ce6Pu6 cuboctahedra.
Pu(Ce) crystallizes in the trigonal R-3m space group. Pu(1) is bonded to six equivalent Pu(1) and six equivalent Ce(1) atoms to form PuCe6Pu6 cuboctahedra that share corners with twelve equivalent Pu(1)Ce6Pu6 cuboctahedra, edges with twelve equivalent Pu(1)Ce6Pu6 cuboctahedra, edges with twelve equivalent Ce(1)Ce6Pu6 cuboctahedra, faces with six equivalent Pu(1)Ce6Pu6 cuboctahedra, and faces with twelve equivalent Ce(1)Ce6Pu6 cuboctahedra. All Pu(1)-Pu(1) bond lengths are 3.30 Å. All Pu(1)-Ce(1) bond lengths are 3.25 Å. Ce(1) is bonded to six equivalent Pu(1) and six equivalent Ce(1) atoms to form CeCe6Pu6 cuboctahedra that share corners with twelve equivalent Ce(1)Ce6Pu6 cuboctahedra, edges with twelve equivalent Pu(1)Ce6Pu6 cuboctahedra, edges with twelve equivalent Ce(1)Ce6Pu6 cuboctahedra, faces with six equivalent Ce(1)Ce6Pu6 cuboctahedra, and faces with twelve equivalent Pu(1)Ce6Pu6 cuboctahedra. All Ce(1)-Ce(1) bond lengths are 3.30 Å.