DOI: 10.17188/1290589
title: Materials Data on Li4Ti3NbO8 by Materials Project

description: Li4Ti3NbO8 is alpha Po-derived structured and crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are three inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with six equivalent NbO6 octahedra, edges with six LiO6 octahedra, and edges with six TiO6 octahedra. The corner-sharing octahedral tilt angles are 2°. All Li–O bond lengths are 2.09 Å. In the second Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with six equivalent TiO6 octahedra, edges with two equivalent NbO6 octahedra, edges with four TiO6 octahedra, and edges with six LiO6 octahedra. The corner-sharing octahedra tilt angles range from 2–5°. There are four shorter (2.14 Å) and two longer (2.18 Å) Li–O bond lengths. In the third Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with six equivalent TiO6 octahedra, edges with two equivalent NbO6 octahedra, edges with four equivalent TiO6 octahedra, and edges with six LiO6 octahedra. The corner-sharing octahedra tilt angles range from 2–4°. There are four shorter (2.14 Å) and two longer (2.18 Å) Li–O bond lengths. There are two inequivalent Ti+3.33+ sites. In the first Ti+3.33+ site, Ti+3.33+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six equivalent LiO6 octahedra, edges with two equivalent NbO6 octahedra, edges with four TiO6 octahedra, and edges with six LiO6 octahedra. The corner-sharing octahedra tilt angles range from 2–5°. There are a spread of Ti–O bond distances ranging from 2.06–2.09 Å. In the second Ti+3.33+ site, Ti+3.33+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with six equivalent LiO6 octahedra, edges with two equivalent NbO6 octahedra, edges with four equivalent TiO6 octahedra, and edges with six LiO6 octahedra. The corner-sharing octahedra tilt angles range from 2–4°. There are two shorter (2.05 Å) and four longer (2.10 Å) Ti–O bond lengths. Nb2+ is bonded to six O2- atoms to form NbO6 octahedra that share corners with six equivalent LiO6 octahedra, edges with six LiO6 octahedra, and edges with six TiO6 octahedra. The corner-sharing octahedral tilt angles are 2°. There are two shorter (2.13 Å) and four longer (2.15 Å) Nb–O bond lengths. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to three Li1+ and three Ti+3.33+ atoms to form OLi3Ti3 octahedra that share corners with six equivalent OLi3Ti3 octahedra and edges with twelve OLi3Ti2Nb octahedra. The corner-sharing octahedral tilt angles are 0°. In the second O2- site, O2- is bonded to three Li1+, two Ti+3.33+, and one Nb2+ atom to form OLi3Ti2Nb octahedra that share corners with six equivalent OLi3Ti2Nb octahedra and edges with twelve OLi3Ti3 octahedra. The corner-sharing octahedral tilt angles are 0°. In the third O2- site, O2- is bonded to three Li1+, two equivalent Ti+3.33+, and one Nb2+ atom to form OLi3Ti2Nb octahedra that share corners with six equivalent OLi3Ti2Nb octahedra and edges with twelve OLi3Ti3 octahedra. The corner-sharing octahedral tilt angles are 0°.