DOE OSTI2020
BaVS3 crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are four inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded to twelve S2- atoms to form BaS12 cuboctahedra that share corners with six BaS12 cuboctahedra, corners with six VS6 octahedra, faces with eight BaS12 cuboctahedra, and faces with six VS6 octahedra. The corner-sharing octahedra tilt angles range from 13–24°. There are a spread of Ba–S bond distances ranging from 3.34–3.51 Å. In the second Ba2+ site, Ba2+ is bonded to twelve S2- atoms to form BaS12 cuboctahedra that share corners with six BaS12 cuboctahedra, corners with six VS6 octahedra, faces with eight BaS12 cuboctahedra, and faces with six VS6 octahedra. The corner-sharing octahedra tilt angles range from 14–26°. There are a spread of Ba–S bond distances ranging from 3.35–3.53 Å. In the third Ba2+ site, Ba2+ is bonded to twelve S2- atoms to form BaS12 cuboctahedra that share corners with six BaS12 cuboctahedra, corners with six VS6 octahedra, faces with eight BaS12 cuboctahedra, and faces with six VS6 octahedra. The corner-sharing octahedra tilt angles range from 15–23°. There are a spread of Ba–S bond distances ranging from 3.37–3.49 Å. In the fourth Ba2+ site, Ba2+ is bonded to twelve S2- atoms to form BaS12 cuboctahedra that share corners with six BaS12 cuboctahedra, corners with six VS6 octahedra, faces with eight BaS12 cuboctahedra, and faces with six VS6 octahedra. The corner-sharing octahedra tilt angles range from 14–22°. There are a spread of Ba–S bond distances ranging from 3.34–3.51 Å. There are four inequivalent V4+ sites. In the first V4+ site, V4+ is bonded to six S2- atoms to form distorted VS6 octahedra that share corners with six BaS12 cuboctahedra, faces with six BaS12 cuboctahedra, and faces with two VS6 octahedra. There are a spread of V–S bond distances ranging from 2.21–2.69 Å. In the second V4+ site, V4+ is bonded to six S2- atoms to form distorted VS6 octahedra that share corners with six BaS12 cuboctahedra, faces with six BaS12 cuboctahedra, and faces with two VS6 octahedra. There are a spread of V–S bond distances ranging from 2.19–2.74 Å. In the third V4+ site, V4+ is bonded to six S2- atoms to form distorted VS6 octahedra that share corners with six BaS12 cuboctahedra, faces with six BaS12 cuboctahedra, and faces with two VS6 octahedra. There are a spread of V–S bond distances ranging from 2.21–2.63 Å. In the fourth V4+ site, V4+ is bonded to six S2- atoms to form VS6 octahedra that share corners with six BaS12 cuboctahedra, faces with six BaS12 cuboctahedra, and faces with two VS6 octahedra. There are a spread of V–S bond distances ranging from 2.22–2.60 Å. There are eight inequivalent S2- sites. In the first S2- site, S2- is bonded in a 1-coordinate geometry to four Ba2+ and two V4+ atoms. In the second S2- site, S2- is bonded in a 1-coordinate geometry to four Ba2+ and two V4+ atoms. In the third S2- site, S2- is bonded in a 1-coordinate geometry to four Ba2+ and two V4+ atoms. In the fourth S2- site, S2- is bonded in a 1-coordinate geometry to four Ba2+ and two V4+ atoms. In the fifth S2- site, S2- is bonded in a 6-coordinate geometry to four Ba2+ and two V4+ atoms. In the sixth S2- site, S2- is bonded in a 6-coordinate geometry to four Ba2+ and two V4+ atoms. In the seventh S2- site, S2- is bonded in a 6-coordinate geometry to four Ba2+ and two V4+ atoms. In the eighth S2- site, S2- is bonded in a 6-coordinate geometry to four Ba2+ and two V4+ atoms.