Materials Data on Ba2(CrS2)5 by Materials Project
Ba2(CrS2)5 is Orthorhombic Perovskite-like structured and crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are two inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a 11-coordinate geometry to eleven S2- atoms. There are a spread of Ba–S bond distances ranging from 3.20–3.62 Å. In the second Ba2+ site, Ba2+ is bonded in a 10-coordinate geometry to seven S2- atoms. There are a spread of Ba–S bond distances ranging from 3.20–3.46 Å. There are five inequivalent Cr+3.20+ sites. In the first Cr+3.20+ site, Cr+3.20+ is bonded to six S2- atoms to form a mixture of edge, face, and corner-sharing CrS6 octahedra. The corner-sharing octahedra tilt angles range from 30–51°. There are a spread of Cr–S bond distances ranging from 2.33–2.55 Å. In the second Cr+3.20+ site, Cr+3.20+ is bonded to six S2- atoms to form a mixture of edge and corner-sharing CrS6 octahedra. The corner-sharing octahedra tilt angles range from 45–49°. There are a spread of Cr–S bond distances ranging from 2.35–2.43 Å. In the third Cr+3.20+ site, Cr+3.20+ is bonded to six S2- atoms to form a mixture of edge, face, and corner-sharing CrS6 octahedra. The corner-sharing octahedral tilt angles are 30°. There are a spread of Cr–S bond distances ranging from 2.37–2.47 Å. In the fourth Cr+3.20+ site, Cr+3.20+ is bonded to six S2- atoms to form face-sharing CrS6 octahedra. There are a spread of Cr–S bond distances ranging from 2.32–2.49 Å. In the fifth Cr+3.20+ site, Cr+3.20+ is bonded to six S2- atoms to form a mixture of edge, face, and corner-sharing CrS6 octahedra. The corner-sharing octahedra tilt angles range from 47–51°. There are a spread of Cr–S bond distances ranging from 2.33–2.45 Å. There are ten inequivalent S2- sites. In the first S2- site, S2- is bonded in a 5-coordinate geometry to three equivalent Ba2+ and two Cr+3.20+ atoms. In the second S2- site, S2- is bonded to three Ba2+ and two Cr+3.20+ atoms to form a mixture of distorted edge, face, and corner-sharing SBa3Cr2 square pyramids. In the third S2- site, S2- is bonded in a 3-coordinate geometry to two equivalent Ba2+ and three Cr+3.20+ atoms. In the fourth S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to one Ba2+ and three Cr+3.20+ atoms. In the fifth S2- site, S2- is bonded to three Ba2+ and two Cr+3.20+ atoms to form a mixture of distorted edge, face, and corner-sharing SBa3Cr2 square pyramids. In the sixth S2- site, S2- is bonded in a rectangular see-saw-like geometry to four Cr+3.20+ atoms. In the seventh S2- site, S2- is bonded in a 4-coordinate geometry to one Ba2+ and four Cr+3.20+ atoms. In the eighth S2- site, S2- is bonded in a 4-coordinate geometry to one Ba2+ and four Cr+3.20+ atoms. In the ninth S2- site, S2- is bonded in a 3-coordinate geometry to two equivalent Ba2+ and three Cr+3.20+ atoms. In the tenth S2- site, S2- is bonded in a 3-coordinate geometry to two equivalent Ba2+ and three Cr+3.20+ atoms.