HoCe3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. Ho(1) is bonded to four equivalent Ce(2) and eight equivalent Ce(1) atoms to form HoCe12 cuboctahedra that share corners with four equivalent Ho(1)Ce12 cuboctahedra, corners with eight equivalent Ce(2)Ce8Ho4 cuboctahedra, edges with eight equivalent Ho(1)Ce12 cuboctahedra, edges with sixteen equivalent Ce(1)Ce8Ho4 cuboctahedra, faces with four equivalent Ho(1)Ce12 cuboctahedra, faces with six equivalent Ce(2)Ce8Ho4 cuboctahedra, and faces with eight equivalent Ce(1)Ce8Ho4 cuboctahedra. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded to four equivalent Ho(1), four equivalent Ce(1), and four equivalent Ce(2) atoms to form CeCe8Ho4 cuboctahedra that share corners with twelve equivalent Ce(1)Ce8Ho4 cuboctahedra, edges with eight equivalent Ho(1)Ce12 cuboctahedra, edges with eight equivalent Ce(1)Ce8Ho4 cuboctahedra, edges with eight equivalent Ce(2)Ce8Ho4 cuboctahedra, faces with four equivalent Ho(1)Ce12 cuboctahedra, faces with four equivalent Ce(2)Ce8Ho4 cuboctahedra, and faces with ten equivalent Ce(1)Ce8Ho4 cuboctahedra. In the second Ce site, Ce(2) is bonded to four equivalent Ho(1) and eight equivalent Ce(1) atoms to form CeCe8Ho4 cuboctahedra that share corners with four equivalent Ce(2)Ce8Ho4 cuboctahedra, corners with eight equivalent Ho(1)Ce12 cuboctahedra, edges with eight equivalent Ce(2)Ce8Ho4 cuboctahedra, edges with sixteen equivalent Ce(1)Ce8Ho4 cuboctahedra, faces with four equivalent Ce(2)Ce8Ho4 cuboctahedra, faces with six equivalent Ho(1)Ce12 cuboctahedra, and faces with eight equivalent Ce(1)Ce8Ho4 cuboctahedra.
HoCe3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. Ho(1) is bonded to four equivalent Ce(2) and eight equivalent Ce(1) atoms to form HoCe12 cuboctahedra that share corners with four equivalent Ho(1)Ce12 cuboctahedra, corners with eight equivalent Ce(2)Ce8Ho4 cuboctahedra, edges with eight equivalent Ho(1)Ce12 cuboctahedra, edges with sixteen equivalent Ce(1)Ce8Ho4 cuboctahedra, faces with four equivalent Ho(1)Ce12 cuboctahedra, faces with six equivalent Ce(2)Ce8Ho4 cuboctahedra, and faces with eight equivalent Ce(1)Ce8Ho4 cuboctahedra. All Ho(1)-Ce(2) bond lengths are 3.38 Å. All Ho(1)-Ce(1) bond lengths are 3.41 Å. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded to four equivalent Ho(1), four equivalent Ce(1), and four equivalent Ce(2) atoms to form CeCe8Ho4 cuboctahedra that share corners with twelve equivalent Ce(1)Ce8Ho4 cuboctahedra, edges with eight equivalent Ho(1)Ce12 cuboctahedra, edges with eight equivalent Ce(1)Ce8Ho4 cuboctahedra, edges with eight equivalent Ce(2)Ce8Ho4 cuboctahedra, faces with four equivalent Ho(1)Ce12 cuboctahedra, faces with four equivalent Ce(2)Ce8Ho4 cuboctahedra, and faces with ten equivalent Ce(1)Ce8Ho4 cuboctahedra. All Ce(1)-Ce(1) bond lengths are 3.38 Å. All Ce(1)-Ce(2) bond lengths are 3.41 Å. In the second Ce site, Ce(2) is bonded to four equivalent Ho(1) and eight equivalent Ce(1) atoms to form CeCe8Ho4 cuboctahedra that share corners with four equivalent Ce(2)Ce8Ho4 cuboctahedra, corners with eight equivalent Ho(1)Ce12 cuboctahedra, edges with eight equivalent Ce(2)Ce8Ho4 cuboctahedra, edges with sixteen equivalent Ce(1)Ce8Ho4 cuboctahedra, faces with four equivalent Ce(2)Ce8Ho4 cuboctahedra, faces with six equivalent Ho(1)Ce12 cuboctahedra, and faces with eight equivalent Ce(1)Ce8Ho4 cuboctahedra.