Materials Data on BaLaBr5 by Materials Project

Abstract

BaLaBr5 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. Ba2+ is bonded in a 7-coordinate geometry to eight Br1- atoms. There are a spread of Ba–Br bond distances ranging from 3.20–3.95 Å. La3+ is bonded in a 7-coordinate geometry to seven Br1- atoms. There are a spread of La–Br bond distances ranging from 2.93–3.15 Å. There are five inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 3-coordinate geometry to two equivalent Ba2+ and one La3+ atom. In the second Br1- site, Br1- is bonded in a distorted trigonal non-coplanar geometry to three equivalent Ba2+ atoms. In the third Br1- site, Br1- is bonded in a trigonal non-coplanar geometry to three equivalent La3+ atoms. In the fourth Br1- site, Br1- is bonded in a 3-coordinate geometry to two equivalent Ba2+ and one La3+ atom. In the fifth Br1- site, Br1- is bonded in a distorted water-like geometry to one Ba2+ and two equivalent La3+ atoms.