U3Cu3Sb4 crystallizes in the cubic I-43d space group. U(1) is bonded in a 12-coordinate geometry to four equivalent Cu(1) and eight equivalent Sb(1) atoms. Cu(1) is bonded in a 8-coordinate geometry to four equivalent U(1) and four equivalent Sb(1) atoms. Sb(1) is bonded in a 9-coordinate geometry to six equivalent U(1) and three equivalent Cu(1) atoms.
U3Cu3Sb4 crystallizes in the cubic I-43d space group. U(1) is bonded in a 12-coordinate geometry to four equivalent Cu(1) and eight equivalent Sb(1) atoms. All U(1)-Cu(1) bond lengths are 2.90 Å. There are four shorter (3.25 Å) and four longer (3.31 Å) U(1)-Sb(1) bond lengths. Cu(1) is bonded in a 8-coordinate geometry to four equivalent U(1) and four equivalent Sb(1) atoms. All Cu(1)-Sb(1) bond lengths are 2.66 Å. Sb(1) is bonded in a 9-coordinate geometry to six equivalent U(1) and three equivalent Cu(1) atoms.