La5Sn3 crystallizes in the tetragonal I4/mcm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 4-coordinate geometry to four equivalent Sn(2) atoms. In the second La site, La(2) is bonded in a 6-coordinate geometry to two equivalent Sn(1) and four equivalent Sn(2) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 10-coordinate geometry to eight equivalent La(2) and two equivalent Sn(1) atoms. In the second Sn site, Sn(2) is bonded in a 10-coordinate geometry to two equivalent La(1) and eight equivalent La(2) atoms.
La5Sn3 crystallizes in the tetragonal I4/mcm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 4-coordinate geometry to four equivalent Sn(2) atoms. All La(1)-Sn(2) bond lengths are 3.32 Å. In the second La site, La(2) is bonded in a 6-coordinate geometry to two equivalent Sn(1) and four equivalent Sn(2) atoms. Both La(2)-Sn(1) bond lengths are 3.38 Å. There are a spread of La(2)-Sn(2) bond distances ranging from 3.38-3.73 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 10-coordinate geometry to eight equivalent La(2) and two equivalent Sn(1) atoms. Both Sn(1)-Sn(1) bond lengths are 3.23 Å. In the second Sn site, Sn(2) is bonded in a 10-coordinate geometry to two equivalent La(1) and eight equivalent La(2) atoms.