Materials Data on Li2FeSi3O8 by Materials Project

Dataset · Fri Jun 05 04:00:00 EDT 2020

DOI:https://doi.org/10.17188/1297383· OSTI ID:1297383

Li2FeSi3O8 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. there are two inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with two equivalent FeO4 tetrahedra and corners with six SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.89–2.22 Å. In the second Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with two equivalent FeO4 tetrahedra and corners with six SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.90–2.51 Å. Fe2+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four LiO4 tetrahedra and corners with four SiO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 1.98–2.02 Å. There are three inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four LiO4 tetrahedra and corners with four SiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.65–1.68 Å. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with two equivalent FeO4 tetrahedra, corners with two equivalent SiO4 tetrahedra, and corners with four LiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.60–1.70 Å. In the third Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with two equivalent FeO4 tetrahedra, corners with two equivalent SiO4 tetrahedra, and corners with four LiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.60–1.72 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal non-coplanar geometry to one Li1+, one Fe2+, and one Si4+ atom. In the second O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Si4+ atoms. In the third O2- site, O2- is bonded in a 2-coordinate geometry to one Li1+ and two Si4+ atoms. In the fourth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Fe2+, and one Si4+ atom. In the fifth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+ and two Si4+ atoms. In the sixth O2- site, O2- is bonded in a trigonal non-coplanar geometry to one Li1+, one Fe2+, and one Si4+ atom. In the seventh O2- site, O2- is bonded in a trigonal planar geometry to one Li1+ and two Si4+ atoms. In the eighth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Fe2+, and one Si4+ 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: 1297383
• Report Number(s): mp-767149
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Fe-Li-O-Si
Li2FeSi3O8
crystal structure