Materials Data on Ca2SnS4 by Materials Project

Abstract

Ca2SnS4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Ca2+ sites. In the first Ca2+ site, Ca2+ is bonded in a 7-coordinate geometry to seven S2- atoms. There are a spread of Ca–S bond distances ranging from 2.83–3.43 Å. In the second Ca2+ site, Ca2+ is bonded in a 6-coordinate geometry to six S2- atoms. There are a spread of Ca–S bond distances ranging from 2.72–3.37 Å. Sn4+ is bonded in a tetrahedral geometry to four S2- atoms. There are a spread of Sn–S bond distances ranging from 2.34–2.42 Å. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded in a 5-coordinate geometry to four Ca2+ and one Sn4+ atom. In the second S2- site, S2- is bonded in a T-shaped geometry to two Ca2+ and one Sn4+ atom. In the third S2- site, S2- is bonded in a 3-coordinate geometry to three Ca2+ and one Sn4+ atom.