La5Sn3C 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 6-coordinate geometry to six equivalent Sn(1) atoms. In the second La site, La(2) is bonded in a 2-coordinate geometry to five equivalent Sn(1) and two equivalent C(1) atoms. Sn(1) is bonded in a 9-coordinate geometry to four equivalent La(1) and five equivalent La(2) atoms. C(1) is bonded to six equivalent La(2) atoms to form face-sharing CLa6 octahedra.
La5Sn3C 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 6-coordinate geometry to six equivalent Sn(1) atoms. All La(1)-Sn(1) bond lengths are 3.36 Å. In the second La site, La(2) is bonded in a 2-coordinate geometry to five equivalent Sn(1) and two equivalent C(1) atoms. There are a spread of La(2)-Sn(1) bond distances ranging from 3.40-3.92 Å. Both La(2)-C(1) bond lengths are 2.66 Å. Sn(1) is bonded in a 9-coordinate geometry to four equivalent La(1) and five equivalent La(2) atoms. C(1) is bonded to six equivalent La(2) atoms to form face-sharing CLa6 octahedra.