Materials Data on Li7Sb2S by Materials Project
Li7Sb2S crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are seven inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a 1-coordinate geometry to three Sb+2.50- and one S2- atom. There are a spread of Li–Sb bond distances ranging from 2.92–3.31 Å. The Li–S bond length is 2.41 Å. In the second Li1+ site, Li1+ is bonded to three Sb+2.50- and one S2- atom to form a mixture of distorted edge and corner-sharing LiSb3S tetrahedra. There are a spread of Li–Sb bond distances ranging from 2.82–2.96 Å. The Li–S bond length is 2.44 Å. In the third Li1+ site, Li1+ is bonded to three Sb+2.50- and one S2- atom to form a mixture of edge and corner-sharing LiSb3S tetrahedra. There are two shorter (2.88 Å) and one longer (2.92 Å) Li–Sb bond lengths. The Li–S bond length is 2.46 Å. In the fourth Li1+ site, Li1+ is bonded in a distorted T-shaped geometry to two Sb+2.50- and one S2- atom. Both Li–Sb bond lengths are 2.80 Å. The Li–S bond length is 2.44 Å. In the fifth Li1+ site, Li1+ is bonded to three Sb+2.50- and one S2- atom to form a mixture of edge and corner-sharing LiSb3S tetrahedra. There are a spread of Li–Sb bond distances ranging from 2.81–2.89 Å. The Li–S bond length is 2.43 Å. In the sixth Li1+ site, Li1+ is bonded to three Sb+2.50- and one S2- atom to form a mixture of distorted edge and corner-sharing LiSb3S tetrahedra. There are two shorter (2.81 Å) and one longer (2.88 Å) Li–Sb bond lengths. The Li–S bond length is 2.42 Å. In the seventh Li1+ site, Li1+ is bonded in a 1-coordinate geometry to three Sb+2.50- and one S2- atom. There are a spread of Li–Sb bond distances ranging from 2.87–3.26 Å. The Li–S bond length is 2.40 Å. There are two inequivalent Sb+2.50- sites. In the first Sb+2.50- site, Sb+2.50- is bonded in a 10-coordinate geometry to ten Li1+ atoms. In the second Sb+2.50- site, Sb+2.50- is bonded in a 10-coordinate geometry to ten Li1+ atoms. S2- is bonded in a distorted pentagonal bipyramidal geometry to seven Li1+ atoms.