Materials Data on Li9V3(WO4)7 by Materials Project

Abstract

Li9V3(WO4)7 crystallizes in the trigonal R3m space group. The structure is three-dimensional. there are two inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Li–O bond distances ranging from 2.01–2.56 Å. In the second Li1+ site, Li1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Li–O bond distances ranging from 1.99–2.65 Å. V+4.33+ is bonded to six O2- atoms to form VO6 octahedra that share corners with two equivalent WO4 tetrahedra and edges with two equivalent WO6 octahedra. There are a spread of V–O bond distances ranging from 2.09–2.29 Å. There are three inequivalent W+4.86+ sites. In the first W+4.86+ site, W+4.86+ is bonded in a 6-coordinate geometry to six O2- atoms. There are three shorter (1.88 Å) and three longer (2.38 Å) W–O bond lengths. In the second W+4.86+ site, W+4.86+ is bonded to six O2- atoms to form distorted WO6 octahedra that share edges with two equivalent VO6 octahedra and edges with two equivalent WO6 octahedra. There are a spread of W–O bond distances ranging from 1.81–2.18 Å. In the third W+4.86+ site, W+4.86+ is bonded to four O2- atoms to form WO4 tetrahedra that share corners with two equivalent VO6 octahedra. The corner-sharing octahedral tilt angles are 55°. There are a spread of W–O bond distances ranging from 1.80–1.83 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Li1+, one V+4.33+, and three W+4.86+ atoms to form distorted edge-sharing OLi2VW3 octahedra. In the second O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two Li1+, one V+4.33+, and one W+4.86+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+, one V+4.33+, and one W+4.86+ atom. In the fourth O2- site, O2- is bonded in a 6-coordinate geometry to three equivalent Li1+ and three equivalent W+4.86+ atoms. In the fifth O2- site, O2- is bonded in a trigonal planar geometry to two equivalent Li1+ and one W+4.86+ atom. In the sixth O2- site, O2- is bonded in a distorted see-saw-like geometry to three Li1+ and one W+4.86+ atom. In the seventh O2- site, O2- is bonded in a distorted see-saw-like geometry to two equivalent Li1+, one V+4.33+, and one W+4.86+ atom. In the eighth O2- site, O2- is bonded in a trigonal planar geometry to two equivalent Li1+ and one W+4.86+ atom.