Materials Data on Li3V2(OF)3 by Materials Project

Abstract

Li3V2(OF)3 is Aluminum carbonitride-derived structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are three inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a 5-coordinate geometry to one O2- and four F1- atoms. The Li–O bond length is 2.35 Å. There are a spread of Li–F bond distances ranging from 1.91–1.93 Å. In the second Li1+ site, Li1+ is bonded to one O2- and three equivalent F1- atoms to form LiOF3 tetrahedra that share corners with three equivalent VO6 octahedra and corners with nine LiOF3 tetrahedra. The corner-sharing octahedra tilt angles range from 65–67°. The Li–O bond length is 2.02 Å. There are a spread of Li–F bond distances ranging from 1.93–1.95 Å. In the third Li1+ site, Li1+ is bonded to four F1- atoms to form corner-sharing LiF4 tetrahedra. There are a spread of Li–F bond distances ranging from 1.90–1.95 Å. There are two inequivalent V3+ sites. In the first V3+ site, V3+ is bonded to six O2- atoms to form VO6 octahedra that share corners with three equivalent LiOF3 tetrahedra, corners with three equivalent VO4F trigonal bipyramids, and edges with six equivalent VO6 octahedra. There are a spread of V–O bond distances ranging from 2.00–2.23 Å. In the second V3+ site, V3+ is bonded to four O2- and one F1- atom to form distorted VO4F trigonal bipyramids that share corners with three equivalent VO6 octahedra and corners with six equivalent VO4F trigonal bipyramids. The corner-sharing octahedra tilt angles range from 57–60°. There are a spread of V–O bond distances ranging from 1.89–1.94 Å. The V–F bond length is 2.28 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+ and three equivalent V3+ atoms. In the second O2- site, O2- is bonded to one Li1+ and three equivalent V3+ atoms to form OLiV3 tetrahedra that share corners with three equivalent FLi4 tetrahedra, corners with six equivalent OLiV3 tetrahedra, corners with three equivalent OV4 trigonal pyramids, and edges with three equivalent OV4 trigonal pyramids. In the third O2- site, O2- is bonded to four V3+ atoms to form distorted OV4 trigonal pyramids that share a cornercorner with one FLi3V tetrahedra, corners with three equivalent OLiV3 tetrahedra, corners with six equivalent OV4 trigonal pyramids, and edges with three equivalent OLiV3 tetrahedra. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded to four Li1+ atoms to form corner-sharing FLi4 tetrahedra. In the second F1- site, F1- is bonded to three equivalent Li1+ and one V3+ atom to form distorted FLi3V tetrahedra that share corners with nine FLi4 tetrahedra and a cornercorner with one OV4 trigonal pyramid. In the third F1- site, F1- is bonded to four Li1+ atoms to form FLi4 tetrahedra that share corners with three equivalent OLiV3 tetrahedra and corners with nine FLi4 tetrahedra.