DOI: 10.17188/1300126
title: Materials Data on Li2TiCo2O5 by Materials Project

description: Li2TiCo2O5 is Caswellsilverite-derived structured and crystallizes in the monoclinic Cc space group. The structure is three-dimensional. there are two inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with two equivalent CoO6 octahedra, corners with four LiO6 octahedra, edges with three LiO6 octahedra, edges with four equivalent TiO6 octahedra, and edges with five CoO6 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. There are a spread of Li–O bond distances ranging from 2.07–2.15 Å. In the second Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with two equivalent LiO6 octahedra, corners with four CoO6 octahedra, edges with three LiO6 octahedra, edges with three equivalent TiO6 octahedra, and edges with six CoO6 octahedra. The corner-sharing octahedra tilt angles range from 6–7°. There are a spread of Li–O bond distances ranging from 2.07–2.17 Å. Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with two equivalent TiO6 octahedra, corners with four CoO6 octahedra, edges with five CoO6 octahedra, and edges with seven LiO6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are a spread of Ti–O bond distances ranging from 1.94–2.14 Å. There are two inequivalent Co2+ sites. In the first Co2+ site, Co2+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with two equivalent LiO6 octahedra, corners with two equivalent TiO6 octahedra, corners with two equivalent CoO6 octahedra, edges with three equivalent TiO6 octahedra, edges with three equivalent CoO6 octahedra, and edges with six LiO6 octahedra. The corner-sharing octahedra tilt angles range from 0–6°. There are a spread of Co–O bond distances ranging from 2.09–2.19 Å. In the second Co2+ site, Co2+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with two equivalent TiO6 octahedra, corners with four LiO6 octahedra, edges with two equivalent TiO6 octahedra, edges with five LiO6 octahedra, and edges with five CoO6 octahedra. The corner-sharing octahedra tilt angles range from 2–7°. There are a spread of Co–O bond distances ranging from 2.07–2.21 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded to three Li1+, one Ti4+, and two Co2+ atoms to form a mixture of edge and corner-sharing OLi3TiCo2 octahedra. The corner-sharing octahedra tilt angles range from 1–7°. In the second O2- site, O2- is bonded to two equivalent Li1+, two equivalent Ti4+, and two equivalent Co2+ atoms to form OLi2Ti2Co2 octahedra that share corners with six OLi2TiCo3 octahedra and edges with twelve OLi3TiCo2 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. In the third O2- site, O2- is bonded to two equivalent Li1+, one Ti4+, and three Co2+ atoms to form a mixture of edge and corner-sharing OLi2TiCo3 octahedra. The corner-sharing octahedra tilt angles range from 2–6°. In the fourth O2- site, O2- is bonded to three Li1+, one Ti4+, and two Co2+ atoms to form OLi3TiCo2 octahedra that share corners with six OLi3TiCo2 octahedra and edges with twelve OLi2TiCo3 octahedra. The corner-sharing octahedra tilt angles range from 1–7°. In the fifth O2- site, O2- is bonded to two equivalent Li1+, one Ti4+, and three Co2+ atoms to form a mixture of edge and corner-sharing OLi2TiCo3 octahedra. The corner-sharing octahedra tilt angles range from 2–6°.