U3ScSb5 crystallizes in the hexagonal P6_3/mcm space group. U(1) is bonded in a 9-coordinate geometry to four equivalent Sb(1) and five equivalent Sb(2) atoms. Sc(1) is bonded to six equivalent Sb(2) atoms to form face-sharing ScSb6 octahedra. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 8-coordinate geometry to six equivalent U(1) and two equivalent Sb(1) atoms. In the second Sb site, Sb(2) is bonded to five equivalent U(1) and two equivalent Sc(1) atoms to form a mixture of distorted face, corner, and edge-sharing SbSc2U5 pentagonal bipyramids.
U3ScSb5 crystallizes in the hexagonal P6_3/mcm space group. U(1) is bonded in a 9-coordinate geometry to four equivalent Sb(1) and five equivalent Sb(2) atoms. All U(1)-Sb(1) bond lengths are 3.29 Å. There are a spread of U(1)-Sb(2) bond distances ranging from 3.19-3.34 Å. Sc(1) is bonded to six equivalent Sb(2) atoms to form face-sharing ScSb6 octahedra. All Sc(1)-Sb(2) bond lengths are 2.94 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 8-coordinate geometry to six equivalent U(1) and two equivalent Sb(1) atoms. Both Sb(1)-Sb(1) bond lengths are 3.15 Å. In the second Sb site, Sb(2) is bonded to five equivalent U(1) and two equivalent Sc(1) atoms to form a mixture of distorted face, corner, and edge-sharing SbSc2U5 pentagonal bipyramids.