DOI: 10.17188/1693030
title: Materials Data on TiCo3O8 by Materials Project

description: TiCo3O8 is beta Vanadium nitride-derived structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are eight inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 pentagonal pyramids that share corners with two equivalent CoO6 octahedra, an edgeedge with one TiO6 octahedra, an edgeedge with one CoO6 octahedra, an edgeedge with one TiO6 pentagonal pyramid, and an edgeedge with one CoO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 26–30°. There are a spread of Ti–O bond distances ranging from 1.91–2.05 Å. In the second Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 pentagonal pyramids that share corners with two equivalent CoO6 octahedra, an edgeedge with one TiO6 octahedra, an edgeedge with one CoO6 octahedra, an edgeedge with one TiO6 pentagonal pyramid, and an edgeedge with one CoO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 22–25°. There are a spread of Ti–O bond distances ranging from 1.86–2.01 Å. In the third Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 octahedra that share corners with two equivalent CoO6 octahedra, corners with two equivalent CoO6 pentagonal pyramids, an edgeedge with one TiO6 octahedra, an edgeedge with one CoO6 octahedra, and an edgeedge with one TiO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 21–24°. There are a spread of Ti–O bond distances ranging from 1.87–2.13 Å. In the fourth Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 pentagonal pyramids that share corners with two equivalent CoO6 octahedra, corners with two equivalent CoO6 pentagonal pyramids, an edgeedge with one CoO6 octahedra, and edges with two TiO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 23–27°. There are a spread of Ti–O bond distances ranging from 1.89–2.01 Å. In the fifth Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 octahedra that share corners with two equivalent CoO6 octahedra, corners with two equivalent CoO6 pentagonal pyramids, edges with two CoO6 octahedra, and an edgeedge with one TiO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 21–26°. There are a spread of Ti–O bond distances ranging from 1.92–2.01 Å. In the sixth Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 pentagonal pyramids that share corners with two equivalent CoO6 octahedra, corners with two equivalent CoO6 pentagonal pyramids, edges with three CoO6 octahedra, and an edgeedge with one TiO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 29–32°. There are a spread of Ti–O bond distances ranging from 1.93–2.01 Å. In the seventh Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 octahedra that share corners with two equivalent CoO6 octahedra, an edgeedge with one TiO6 octahedra, edges with two CoO6 octahedra, and an edgeedge with one CoO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 21–25°. There are a spread of Ti–O bond distances ranging from 1.93–2.00 Å. In the eighth Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 pentagonal pyramids that share corners with two equivalent CoO6 octahedra, edges with three CoO6 octahedra, and an edgeedge with one TiO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 28–33°. There are a spread of Ti–O bond distances ranging from 1.87–2.02 Å. There are twenty-four inequivalent Co4+ sites. In the first Co4+ site, Co4+ is bonded to six O2- atoms to form distorted CoO6 octahedra that share corners with two equivalent TiO6 octahedra, corners with two equivalent TiO6 pentagonal pyramids, an edgeedge with one TiO6 octahedra, edges with two CoO6 octahedra, and an edgeedge with one CoO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 21–25°. There are a spread of Co–O bond distances ranging from 1.82–2.03 Å. In the second Co4+ site, Co4+ is bonded to six O2- atoms to form distorted CoO6 octahedra that share corners with four CoO6 octahedra, edges with three CoO6 octahedra, and an edgeedge with one TiO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 21–23°. There are a spread of Co–O bond distances ranging from 1.83–1.99 Å. In the third Co4+ site, Co4+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Co–O bond distances ranging from 1.85–2.19 Å. In the fourth Co4+ site, Co4+ is bonded to six O2- atoms to form a mixture of distorted edge and corner-sharing CoO6 octahedra. The corner-sharing octahedra tilt angles range from 22–25°. There are a spread of Co–O bond distances ranging from 1.82–1.93 Å. In the fifth Co4+ site, Co4+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with four CoO6 octahedra, an edgeedge with one TiO6 octahedra, and edges with two CoO6 octahedra. The corner-sharing octahedra tilt angles range from 21–23°. There are a spread of Co–O bond distances ranging from 1.79–1.96 Å. In the sixth Co4+ site, Co4+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with four CoO6 octahedra, an edgeedge with one TiO6 octahedra, and edges with two CoO6 octahedra. The corner-sharing octahedra tilt angles range from 21–22°. There are a spread of Co–O bond distances ranging from 1.81–1.98 Å. In the seventh Co4+ site, Co4+ is bonded to six O2- atoms to form a mixture of distorted edge and corner-sharing CoO6 octahedra. The corner-sharing octahedra tilt angles range from 19–25°. There are a spread of Co–O bond distances ranging from 1.84–1.99 Å. In the eighth Co4+ site, Co4+ is bonded to six O2- atoms to form a mixture of distorted edge and corner-sharing CoO6 octahedra. The corner-sharing octahedra tilt angles range from 21–25°. There are a spread of Co–O bond distances ranging from 1.81–2.02 Å. In the ninth Co4+ site, Co4+ is bonded to six O2- atoms to form a mixture of distorted edge and corner-sharing CoO6 octahedra. The corner-sharing octahedra tilt angles range from 20–25°. There are a spread of Co–O bond distances ranging from 1.83–1.98 Å. In the tenth Co4+ site, Co4+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedra tilt angles range from 22–25°. There are a spread of Co–O bond distances ranging from 1.86–1.93 Å. In the eleventh Co4+ site, Co4+ is bonded to six O2- atoms to form distorted CoO6 octahedra that share corners with two equivalent TiO6 octahedra, corners with two equivalent TiO6 pentagonal pyramids, and edges with two TiO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 21–24°. There are a spread of Co–O bond distances ranging from 1.73–1.97 Å. In the twelfth Co4+ site, Co4+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing CoO6 octahedra. The corner-sharing octahedra tilt angles range from 19–25°. There are a spread of Co–O bond distances ranging from 1.84–1.97 Å. In the thirteenth Co4+ site, Co4+ is bonded to six O2- atoms to form distorted CoO6 octahedra that share corners with four TiO6 pentagonal pyramids, edges with two TiO6 pentagonal pyramids, and edges with two CoO6 pentagonal pyramids. There are a spread of Co–O bond distances ranging from 1.81–1.98 Å. In the fourteenth Co4+ site, Co4+ is bonded to six O2- atoms to form distorted CoO6 pentagonal pyramids that share corners with two equivalent TiO6 octahedra, corners with two equivalent TiO6 pentagonal pyramids, edges with three CoO6 octahedra, and an edgeedge with one TiO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 29–31°. There are a spread of Co–O bond distances ranging from 1.86–2.11 Å. In the fifteenth Co4+ site, Co4+ is bonded to six O2- atoms to form distorted CoO6 octahedra that share corners with four CoO6 octahedra, edges with three CoO6 octahedra, and an edgeedge with one TiO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 21–23°. There are a spread of Co–O bond distances ranging from 1.83–1.99 Å. In the sixteenth Co4+ site, Co4+ is bonded to six O2- atoms to form distorted CoO6 octahedra that share corners with two equivalent TiO6 octahedra, corners with two equivalent TiO6 pentagonal pyramids, edges with two CoO6 octahedra, and an edgeedge with one TiO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 21–26°. There are a spread of Co–O bond distances ranging from 1.82–2.02 Å. In the seventeenth Co4+ site, Co4+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with four CoO6 octahedra, an edgeedge with one TiO6 octahedra, edges with two CoO6 octahedra, and an edgeedge with one CoO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 21–23°. There are a spread of Co–O bond distances ranging from 1.80–1.98 Å. In the eighteenth Co4+ site, Co4+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Co–O bond distances ranging from 1.85–2.12 Å. In the nineteenth Co4+ site, Co4+ is bonded to six O2- atoms to form distorted CoO6 octahedra that share corners with four CoO6 octahedra, edges with three CoO6 octahedra, and an edgeedge with one TiO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 21–22°. There are a spread of Co–O bond distances ranging from 1.84–2.01 Å. In the twentieth Co4+ site, Co4+ is bonded to six O2- atoms to form distorted CoO6 pentagonal pyramids that share corners with two equivalent TiO6 octahedra, corners with two equivalent TiO6 pentagonal pyramids, an edgeedge with one TiO6 octahedra, edges with two CoO6 octahedra, and an edgeedge with one TiO6 pentagonal pyramid. The corner-sharing octahedral tilt angles are 29°. There are a spread of Co–O bond distances ranging from 1.90–2.06 Å. In the twenty-first Co4+ site, Co4+ is bonded to six O2- atoms to form distorted CoO6 octahedra that share corners with four CoO6 octahedra, edges with three CoO6 octahedra, and an edgeedge with one TiO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 20–23°. There are a spread of Co–O bond distances ranging from 1.82–1.98 Å. In the twenty-second Co4+ site, Co4+ is bonded to six O2- atoms to form a mixture of distorted edge and corner-sharing CoO6 octahedra. The corner-sharing octahedra tilt angles range from 21–25°. There are a spread of Co–O bond distances ranging from 1.81–2.02 Å. In the twenty-third Co4+ site, Co4+ is bonded to six O2- atoms to form a mixture of distorted edge and corner-sharing CoO6 octahedra. The corner-sharing octahedra tilt angles range from 20–24°. There are a spread of Co–O bond distances ranging from 1.83–1.96 Å. In the twenty-fourth Co4+ site, Co4+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with four CoO6 octahedra, an edgeedge with one TiO6 octahedra, edges with two CoO6 octahedra, and an edgeedge with one CoO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 20–23°. There are a spread of Co–O bond distances ranging from 1.79–1.96 Å. There are sixty-four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted T-shaped geometry to three Co4+ atoms. In the second O2- site, O2- is bonded in a distorted T-shaped geometry to three Co4+ atoms. In the third O2- site, O2- is bonded in a distorted T-shaped geometry to one Ti4+ and two Co4+ atoms. In the fourth O2- site, O2- is bonded in a distorted T-shaped geometry to three Co4+ atoms. In the fifth O2- site, O2- is bonded in a distorted T-shaped geometry to three Co4+ atoms. In the sixth O2- site, O2- is bonded in a distorted T-shaped geometry to three Co4+ atoms. In the seventh O2- site, O2- is bonded in a distorted T-shaped geometry to three Co4+ atoms. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to two Ti4+ and one Co4+ atom. In the ninth O2- site, O2- is bonded