DOE OSTI2020
La2Sn3 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are four inequivalent La sites. In the first La site, La is bonded in a 9-coordinate geometry to nine Sn atoms. There are a spread of La–Sn bond distances ranging from 3.28–3.82 Å. In the second La site, La is bonded in a 9-coordinate geometry to ten Sn atoms. There are a spread of La–Sn bond distances ranging from 3.32–3.85 Å. In the third La site, La is bonded in a 9-coordinate geometry to nine Sn atoms. There are a spread of La–Sn bond distances ranging from 3.28–3.67 Å. In the fourth La site, La is bonded in a 8-coordinate geometry to eight Sn atoms. There are a spread of La–Sn bond distances ranging from 3.20–3.68 Å. There are six inequivalent Sn sites. In the first Sn site, Sn is bonded in a 10-coordinate geometry to seven La and three Sn atoms. There are a spread of Sn–Sn bond distances ranging from 3.09–3.39 Å. In the second Sn site, Sn is bonded in a 9-coordinate geometry to seven La and two Sn atoms. The Sn–Sn bond length is 2.99 Å. In the third Sn site, Sn is bonded in a 4-coordinate geometry to six La and two Sn atoms. There are one shorter (3.08 Å) and one longer (3.11 Å) Sn–Sn bond lengths. In the fourth Sn site, Sn is bonded in a 7-coordinate geometry to five La and two equivalent Sn atoms. There are one shorter (2.99 Å) and one longer (3.00 Å) Sn–Sn bond lengths. In the fifth Sn site, Sn is bonded in a 7-coordinate geometry to five La and two equivalent Sn atoms. In the sixth Sn site, Sn is bonded in a 9-coordinate geometry to six La and three Sn atoms.