Materials Data on Ba2SnSe4 by Materials Project

Dataset · Fri May 01 04:00:00 EDT 2020

DOI:https://doi.org/10.17188/1700835· OSTI ID:1700835

Ba2SnSe4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a 9-coordinate geometry to nine Se2- atoms. There are a spread of Ba–Se bond distances ranging from 3.29–3.86 Å. In the second Ba2+ site, Ba2+ is bonded to seven Se2- atoms to form distorted BaSe7 pentagonal bipyramids that share corners with four equivalent BaSe7 pentagonal bipyramids, a cornercorner with one SnSe4 tetrahedra, an edgeedge with one BaSe7 pentagonal bipyramid, and edges with three equivalent SnSe4 tetrahedra. There are a spread of Ba–Se bond distances ranging from 3.24–3.70 Å. Sn4+ is bonded to four Se2- atoms to form SnSe4 tetrahedra that share a cornercorner with one BaSe7 pentagonal bipyramid and edges with three equivalent BaSe7 pentagonal bipyramids. There are a spread of Sn–Se bond distances ranging from 2.55–2.59 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 5-coordinate geometry to four Ba2+ and one Sn4+ atom. In the second Se2- site, Se2- is bonded in a 5-coordinate geometry to four Ba2+ and one Sn4+ atom. In the third Se2- site, Se2- is bonded in a 5-coordinate geometry to four Ba2+ and one Sn4+ atom. In the fourth Se2- site, Se2- is bonded in a 1-coordinate geometry to four Ba2+ and one Sn4+ atom.

• Research Organization: LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• Contributing Organization: The Materials Project; MIT; UC Berkeley; Duke; U Louvain
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1700835
• Report Number(s): mp-1192595
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Ba-Se-Sn
Ba2SnSe4
crystal structure