U3CrSb5 crystallizes in the hexagonal P6_3/mcm space group. U(1) is bonded in a 9-coordinate geometry to four equivalent Sb(2) and five equivalent Sb(1) atoms. Cr(1) is bonded to six equivalent Sb(1) atoms to form face-sharing CrSb6 octahedra. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to five equivalent U(1) and two equivalent Cr(1) atoms to form a mixture of distorted face, corner, and edge-sharing SbU5Cr2 pentagonal bipyramids. In the second Sb site, Sb(2) is bonded in a 8-coordinate geometry to six equivalent U(1) and two equivalent Sb(2) atoms.
U3CrSb5 crystallizes in the hexagonal P6_3/mcm space group. U(1) is bonded in a 9-coordinate geometry to four equivalent Sb(2) and five equivalent Sb(1) atoms. All U(1)-Sb(2) bond lengths are 3.19 Å. There are a spread of U(1)-Sb(1) bond distances ranging from 3.10-3.29 Å. Cr(1) is bonded to six equivalent Sb(1) atoms to form face-sharing CrSb6 octahedra. All Cr(1)-Sb(1) bond lengths are 2.79 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to five equivalent U(1) and two equivalent Cr(1) atoms to form a mixture of distorted face, corner, and edge-sharing SbU5Cr2 pentagonal bipyramids. In the second Sb site, Sb(2) is bonded in a 8-coordinate geometry to six equivalent U(1) and two equivalent Sb(2) atoms. Both Sb(2)-Sb(2) bond lengths are 3.06 Å.