Materials Data on LiVSiO4 by Materials Project
LiVSiO4 is Ilmenite-derived structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Li1+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 1.83–1.99 Å. V3+ is bonded to six O2- atoms to form VO6 octahedra that share corners with four equivalent VO6 octahedra, corners with four equivalent SiO6 octahedra, and edges with two equivalent SiO6 octahedra. The corner-sharing octahedra tilt angles range from 50–51°. There are a spread of V–O bond distances ranging from 2.03–2.08 Å. Si4+ is bonded to six O2- atoms to form SiO6 octahedra that share corners with four equivalent VO6 octahedra, edges with two equivalent VO6 octahedra, and edges with two equivalent SiO6 octahedra. The corner-sharing octahedra tilt angles range from 50–51°. There are a spread of Si–O bond distances ranging from 1.79–1.87 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a rectangular see-saw-like geometry to one Li1+, one V3+, and two equivalent Si4+ atoms. In the second O2- site, O2- is bonded to one Li1+, two equivalent V3+, and one Si4+ atom to form a mixture of distorted edge and corner-sharing OLiV2Si trigonal pyramids. In the third O2- site, O2- is bonded to one Li1+, one V3+, and two equivalent Si4+ atoms to form a mixture of distorted edge and corner-sharing OLiVSi2 trigonal pyramids.