HoAl3 crystallizes in the hexagonal P6_3/mmc space group. Ho(1) is bonded to twelve equivalent Al(1) atoms to form a mixture of distorted face and corner-sharing HoAl12 cuboctahedra. Al(1) is bonded in a 10-coordinate geometry to four equivalent Ho(1) and six equivalent Al(1) atoms.
HoAl3 crystallizes in the hexagonal P6_3/mmc space group. Ho(1) is bonded to twelve equivalent Al(1) atoms to form a mixture of distorted face and corner-sharing HoAl12 cuboctahedra. There are six shorter (3.04 Å) and six longer (3.11 Å) Ho(1)-Al(1) bond lengths. Al(1) is bonded in a 10-coordinate geometry to four equivalent Ho(1) and six equivalent Al(1) atoms. There are two shorter (2.74 Å) and four longer (2.79 Å) Al(1)-Al(1) bond lengths.