La5Sn3I crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to five equivalent Sn(1) and two equivalent I(1) atoms. In the second La site, La(2) is bonded in a 6-coordinate geometry to six equivalent Sn(1) atoms. Sn(1) is bonded in a 9-coordinate geometry to four equivalent La(2) and five equivalent La(1) atoms. I(1) is bonded to six equivalent La(1) atoms to form face-sharing ILa6 octahedra.
La5Sn3I crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to five equivalent Sn(1) and two equivalent I(1) atoms. There are a spread of La(1)-Sn(1) bond distances ranging from 3.30-3.73 Å. Both La(1)-I(1) bond lengths are 3.26 Å. In the second La site, La(2) is bonded in a 6-coordinate geometry to six equivalent Sn(1) atoms. All La(2)-Sn(1) bond lengths are 3.53 Å. Sn(1) is bonded in a 9-coordinate geometry to four equivalent La(2) and five equivalent La(1) atoms. I(1) is bonded to six equivalent La(1) atoms to form face-sharing ILa6 octahedra.