DOI: 10.17188/1309830
title: Materials Data on LiTa3O8 by Materials Project

description: LiTa3O8 crystallizes in the orthorhombic Pmn2_1 space group. The structure is three-dimensional. there are four inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Li–O bond distances ranging from 2.09–2.77 Å. In the second Li1+ site, Li1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Li–O bond distances ranging from 1.89–2.38 Å. In the third Li1+ site, Li1+ is bonded in a 4-coordinate geometry to seven O2- atoms. There are a spread of Li–O bond distances ranging from 2.12–2.78 Å. In the fourth Li1+ site, Li1+ is bonded in a 1-coordinate geometry to seven O2- atoms. There are a spread of Li–O bond distances ranging from 1.96–2.68 Å. There are six inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with six TaO6 octahedra and an edgeedge with one TaO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 1–38°. There are a spread of Ta–O bond distances ranging from 1.95–2.10 Å. In the second Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with six TaO6 octahedra and an edgeedge with one TaO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 16–37°. There are a spread of Ta–O bond distances ranging from 1.93–2.11 Å. In the third Ta5+ site, Ta5+ is bonded to seven O2- atoms to form TaO7 pentagonal bipyramids that share corners with two equivalent TaO7 pentagonal bipyramids and edges with five TaO6 octahedra. There are a spread of Ta–O bond distances ranging from 1.94–2.15 Å. In the fourth Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with six TaO6 octahedra and an edgeedge with one TaO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 18–38°. There are a spread of Ta–O bond distances ranging from 1.95–2.04 Å. In the fifth Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with six TaO6 octahedra and an edgeedge with one TaO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 14–38°. There are a spread of Ta–O bond distances ranging from 1.93–2.11 Å. In the sixth Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with six TaO6 octahedra and an edgeedge with one TaO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 1–37°. There are a spread of Ta–O bond distances ranging from 1.94–2.12 Å. There are twenty-two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted square co-planar geometry to two Li1+ and two Ta5+ atoms. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+ and two Ta5+ atoms. In the third O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the fourth O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the fifth O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to three Ta5+ atoms. In the seventh O2- site, O2- is bonded in a T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the eighth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Ta5+ atoms. In the ninth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Ta5+ atoms. In the tenth O2- site, O2- is bonded in a linear geometry to two equivalent Ta5+ atoms. In the eleventh O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+ and three Ta5+ atoms. In the twelfth O2- site, O2- is bonded in a linear geometry to two equivalent Ta5+ atoms. In the thirteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Li1+ and two equivalent Ta5+ atoms. In the fourteenth O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the fifteenth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Ta5+ atoms. In the sixteenth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Ta5+ atoms. In the seventeenth O2- site, O2- is bonded in a distorted T-shaped geometry to two Li1+ and two equivalent Ta5+ atoms. In the eighteenth O2- site, O2- is bonded in a 3-coordinate geometry to three Ta5+ atoms. In the nineteenth O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent Ta5+ atoms. In the twentieth O2- site, O2- is bonded in a T-shaped geometry to one Li1+ and two equivalent Ta5+ atoms. In the twenty-first O2- site, O2- is bonded in a distorted see-saw-like geometry to two Li1+ and two equivalent Ta5+ atoms. In the twenty-second O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+ and two Ta5+ atoms.