DOI: 10.17188/1291033
title: Materials Data on Li4Ti3Cu3(TeO8)2 by Materials Project

description: Li4Ti3Cu3(TeO8)2 is Hausmannite-derived structured and crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are four inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with three equivalent TeO6 octahedra, corners with four TiO6 octahedra, and corners with five CuO6 octahedra. The corner-sharing octahedra tilt angles range from 53–65°. There is two shorter (1.99 Å) and two longer (2.00 Å) Li–O bond length. In the second Li1+ site, 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 1.87–2.13 Å. In the third Li1+ site, Li1+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 1.97–2.12 Å. In the fourth Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four CuO6 octahedra and corners with five TiO6 octahedra. The corner-sharing octahedra tilt angles range from 47–63°. There are a spread of Li–O bond distances ranging from 1.98–2.14 Å. There are two inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with two equivalent TeO6 octahedra, corners with three LiO4 tetrahedra, edges with two equivalent TiO6 octahedra, and edges with two equivalent CuO6 octahedra. The corner-sharing octahedra tilt angles range from 50–51°. There are a spread of Ti–O bond distances ranging from 1.81–2.26 Å. In the second Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with three LiO4 tetrahedra, an edgeedge with one TeO6 octahedra, and edges with four equivalent CuO6 octahedra. There are a spread of Ti–O bond distances ranging from 1.96–2.03 Å. There are two inequivalent Cu2+ sites. In the first Cu2+ site, Cu2+ is bonded to six O2- atoms to form CuO6 octahedra that share corners with two equivalent TeO6 octahedra, corners with three LiO4 tetrahedra, and edges with four equivalent TiO6 octahedra. The corner-sharing octahedral tilt angles are 51°. There are a spread of Cu–O bond distances ranging from 1.96–2.27 Å. In the second Cu2+ site, Cu2+ is bonded to six O2- atoms to form distorted CuO6 octahedra that share corners with three LiO4 tetrahedra, an edgeedge with one TeO6 octahedra, edges with two equivalent TiO6 octahedra, and edges with two equivalent CuO6 octahedra. There are a spread of Cu–O bond distances ranging from 1.93–2.38 Å. There are two inequivalent Te5+ sites. In the first Te5+ site, Te5+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Te–O bond distances ranging from 1.94–2.53 Å. In the second Te5+ site, Te5+ is bonded to six O2- atoms to form TeO6 octahedra that share corners with two equivalent CuO6 octahedra, corners with four equivalent TiO6 octahedra, corners with three equivalent LiO4 tetrahedra, an edgeedge with one TiO6 octahedra, and edges with two equivalent CuO6 octahedra. The corner-sharing octahedra tilt angles range from 50–51°. There are a spread of Te–O bond distances ranging from 1.95–2.06 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to one Li1+, one Ti4+, one Cu2+, and one Te5+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+, two equivalent Ti4+, and one Te5+ atom. In the third O2- site, O2- is bonded in a rectangular see-saw-like geometry to one Li1+, two equivalent Ti4+, and one Cu2+ atom. In the fourth O2- site, O2- is bonded in a tetrahedral geometry to one Li1+, two equivalent Ti4+, and one Cu2+ atom. In the fifth O2- site, O2- is bonded to one Li1+, one Ti4+, and two equivalent Cu2+ atoms to form corner-sharing OLiTiCu2 tetrahedra. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+, one Ti4+, one Cu2+, and one Te5+ atom. In the seventh O2- site, O2- is bonded in a rectangular see-saw-like geometry to one Li1+, two equivalent Ti4+, and one Te5+ atom. In the eighth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to one Li1+, two equivalent Cu2+, and one Te5+ atom. In the ninth O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+, one Ti4+, one Cu2+, and one Te5+ atom. In the tenth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to one Li1+, one Ti4+, and two equivalent Cu2+ atoms. In the eleventh O2- site, O2- is bonded in a rectangular see-saw-like geometry to one Li1+, one Ti4+, one Cu2+, and one Te5+ atom. In the twelfth O2- site, O2- is bonded to one Li1+, two equivalent Cu2+, and one Te5+ atom to form distorted corner-sharing OLiCu2Te tetrahedra.