U3Co3Sb4 crystallizes in the cubic I-43d space group. U(1) is bonded in a 12-coordinate geometry to four equivalent Co(1) and eight equivalent Sb(1) atoms. Co(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 Co(1) atoms.
U3Co3Sb4 crystallizes in the cubic I-43d space group. U(1) is bonded in a 12-coordinate geometry to four equivalent Co(1) and eight equivalent Sb(1) atoms. All U(1)-Co(1) bond lengths are 2.85 Å. There are four shorter (3.22 Å) and four longer (3.23 Å) U(1)-Sb(1) bond lengths. Co(1) is bonded in a 8-coordinate geometry to four equivalent U(1) and four equivalent Sb(1) atoms. All Co(1)-Sb(1) bond lengths are 2.60 Å. Sb(1) is bonded in a 9-coordinate geometry to six equivalent U(1) and three equivalent Co(1) atoms.