Materials Data on LaGaS3 by Materials Project

Abstract

LaGaS3 crystallizes in the orthorhombic Pna2_1 space group. The structure is three-dimensional. there are three inequivalent La3+ sites. In the first La3+ site, La3+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of La–S bond distances ranging from 2.83–3.29 Å. In the second La3+ site, La3+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of La–S bond distances ranging from 2.90–3.30 Å. In the third La3+ site, La3+ is bonded in a 7-coordinate geometry to seven S2- atoms. There are a spread of La–S bond distances ranging from 2.88–3.35 Å. There are three inequivalent Ga3+ sites. In the first Ga3+ site, Ga3+ is bonded to four S2- atoms to form corner-sharing GaS4 tetrahedra. There are a spread of Ga–S bond distances ranging from 2.22–2.33 Å. In the second Ga3+ site, Ga3+ is bonded to four S2- atoms to form corner-sharing GaS4 tetrahedra. There are a spread of Ga–S bond distances ranging from 2.28–2.34 Å. In the third Ga3+ site, Ga3+ is bonded to four S2- atoms to form corner-sharing GaS4 tetrahedra. There are a spread of Ga–S bond distances ranging from 2.23–2.34 Å. There are nine inequivalent S2- sites. In the first S2- site, S2- is bonded in a 4-coordinate geometry to three La3+ and one Ga3+ atom. In the second S2- site, S2- is bonded in a 4-coordinate geometry to three La3+ and one Ga3+ atom. In the third S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to three La3+ and one Ga3+ atom. In the fourth S2- site, S2- is bonded in a 4-coordinate geometry to two La3+ and two Ga3+ atoms. In the fifth S2- site, S2- is bonded in a 4-coordinate geometry to two La3+ and two Ga3+ atoms. In the sixth S2- site, S2- is bonded to three La3+ and one Ga3+ atom to form distorted corner-sharing SLa3Ga tetrahedra. In the seventh S2- site, S2- is bonded in a 2-coordinate geometry to two equivalent La3+ and two Ga3+ atoms. In the eighth S2- site, S2- is bonded in a 3-coordinate geometry to two equivalent La3+ and one Ga3+ atom. In the ninth S2- site, S2- is bonded to three La3+ and one Ga3+ atom to form distorted corner-sharing SLa3Ga trigonal pyramids.