Th3Ce is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Th(1) is bonded to eight equivalent Th(1) and four equivalent Ce(1) atoms to form ThCe4Th8 cuboctahedra that share corners with twelve equivalent Th(1)Ce4Th8 cuboctahedra, edges with eight equivalent Ce(1)Th12 cuboctahedra, edges with sixteen equivalent Th(1)Ce4Th8 cuboctahedra, faces with four equivalent Ce(1)Th12 cuboctahedra, and faces with fourteen equivalent Th(1)Ce4Th8 cuboctahedra. Ce(1) is bonded to twelve equivalent Th(1) atoms to form CeTh12 cuboctahedra that share corners with twelve equivalent Ce(1)Th12 cuboctahedra, edges with twenty-four equivalent Th(1)Ce4Th8 cuboctahedra, faces with six equivalent Ce(1)Th12 cuboctahedra, and faces with twelve equivalent Th(1)Ce4Th8 cuboctahedra.
Th3Ce is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Th(1) is bonded to eight equivalent Th(1) and four equivalent Ce(1) atoms to form ThCe4Th8 cuboctahedra that share corners with twelve equivalent Th(1)Ce4Th8 cuboctahedra, edges with eight equivalent Ce(1)Th12 cuboctahedra, edges with sixteen equivalent Th(1)Ce4Th8 cuboctahedra, faces with four equivalent Ce(1)Th12 cuboctahedra, and faces with fourteen equivalent Th(1)Ce4Th8 cuboctahedra. All Th(1)-Th(1) bond lengths are 3.53 Å. All Th(1)-Ce(1) bond lengths are 3.53 Å. Ce(1) is bonded to twelve equivalent Th(1) atoms to form CeTh12 cuboctahedra that share corners with twelve equivalent Ce(1)Th12 cuboctahedra, edges with twenty-four equivalent Th(1)Ce4Th8 cuboctahedra, faces with six equivalent Ce(1)Th12 cuboctahedra, and faces with twelve equivalent Th(1)Ce4Th8 cuboctahedra.