U3TiSn5 crystallizes in the hexagonal P6_3/mcm space group. U(1) is bonded in a 9-coordinate geometry to four equivalent Sn(2) and five equivalent Sn(1) atoms. Ti(1) is bonded to six equivalent Sn(1) atoms to form distorted face-sharing TiSn6 octahedra. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to five equivalent U(1) and two equivalent Ti(1) atoms to form a mixture of distorted edge, corner, and face-sharing SnU5Ti2 pentagonal bipyramids. In the second Sn site, Sn(2) is bonded in a 8-coordinate geometry to six equivalent U(1) and two equivalent Sn(2) atoms.
U3TiSn5 crystallizes in the hexagonal P6_3/mcm space group. U(1) is bonded in a 9-coordinate geometry to four equivalent Sn(2) and five equivalent Sn(1) atoms. All U(1)-Sn(2) bond lengths are 3.20 Å. There are a spread of U(1)-Sn(1) bond distances ranging from 3.15-3.25 Å. Ti(1) is bonded to six equivalent Sn(1) atoms to form distorted face-sharing TiSn6 octahedra. All Ti(1)-Sn(1) bond lengths are 2.84 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to five equivalent U(1) and two equivalent Ti(1) atoms to form a mixture of distorted edge, corner, and face-sharing SnU5Ti2 pentagonal bipyramids. In the second Sn site, Sn(2) is bonded in a 8-coordinate geometry to six equivalent U(1) and two equivalent Sn(2) atoms. Both Sn(2)-Sn(2) bond lengths are 3.03 Å.