TmAl3 crystallizes in the hexagonal P6_3/mmc space group. Tm(1) is bonded to twelve equivalent Al(1) atoms to form a mixture of face and corner-sharing TmAl12 cuboctahedra. Al(1) is bonded in a 10-coordinate geometry to four equivalent Tm(1) and six equivalent Al(1) atoms.
TmAl3 crystallizes in the hexagonal P6_3/mmc space group. Tm(1) is bonded to twelve equivalent Al(1) atoms to form a mixture of face and corner-sharing TmAl12 cuboctahedra. There are six shorter (3.02 Å) and six longer (3.08 Å) Tm(1)-Al(1) bond lengths. Al(1) is bonded in a 10-coordinate geometry to four equivalent Tm(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.