Tm3Au3Sb4 crystallizes in the cubic I-43d space group. Tm(1) is bonded in a 12-coordinate geometry to four equivalent Au(1) and eight equivalent Sb(1) atoms. Au(1) is bonded in a 8-coordinate geometry to four equivalent Tm(1) and four equivalent Sb(1) atoms. Sb(1) is bonded in a 9-coordinate geometry to six equivalent Tm(1) and three equivalent Au(1) atoms.
Tm3Au3Sb4 crystallizes in the cubic I-43d space group. Tm(1) is bonded in a 12-coordinate geometry to four equivalent Au(1) and eight equivalent Sb(1) atoms. All Tm(1)-Au(1) bond lengths are 3.00 Å. There are four shorter (3.34 Å) and four longer (3.45 Å) Tm(1)-Sb(1) bond lengths. Au(1) is bonded in a 8-coordinate geometry to four equivalent Tm(1) and four equivalent Sb(1) atoms. All Au(1)-Sb(1) bond lengths are 2.77 Å. Sb(1) is bonded in a 9-coordinate geometry to six equivalent Tm(1) and three equivalent Au(1) atoms.