Materials Data on BaLaI5 by Materials Project

Abstract

BaLaI5 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a 8-coordinate geometry to eight I1- atoms. There are a spread of Ba–I bond distances ranging from 3.53–4.19 Å. In the second Ba2+ site, Ba2+ is bonded in a 9-coordinate geometry to nine I1- atoms. There are a spread of Ba–I bond distances ranging from 3.55–4.02 Å. There are two inequivalent La3+ sites. In the first La3+ site, La3+ is bonded to six I1- atoms to form corner-sharing LaI6 octahedra. The corner-sharing octahedra tilt angles range from 44–52°. There are a spread of La–I bond distances ranging from 3.06–3.20 Å. In the second La3+ site, La3+ is bonded to six I1- atoms to form distorted corner-sharing LaI6 octahedra. The corner-sharing octahedra tilt angles range from 44–52°. There are a spread of La–I bond distances ranging from 3.10–3.34 Å. There are ten inequivalent I1- sites. In the first I1- site, I1- is bonded in a distorted water-like geometry to one Ba2+ and one La3+ atom. In the second I1- site, I1- is bonded in a 3-coordinate geometry to two Ba2+ and one La3+ atom. In the third I1- site, I1- is bonded in a 3-coordinate geometry to two Ba2+ and one La3+ atom. In the fourth I1- site, I1- is bonded in a 3-coordinate geometry to two Ba2+ and one La3+ atom. In the fifth I1- site, I1- is bonded in a distorted water-like geometry to one Ba2+ and one La3+ atom. In the sixth I1- site, I1- is bonded in a 2-coordinate geometry to one Ba2+ and two La3+ atoms. In the seventh I1- site, I1- is bonded in a 4-coordinate geometry to three Ba2+ and one La3+ atom. In the eighth I1- site, I1- is bonded in a distorted bent 150 degrees geometry to two Ba2+ and one La3+ atom. In the ninth I1- site, I1- is bonded in a 3-coordinate geometry to two Ba2+ and one La3+ atom. In the tenth I1- site, I1- is bonded in a 3-coordinate geometry to one Ba2+ and two La3+ atoms.