Materials Data on Ti3MnO8 by Materials Project

Abstract

Ti3MnO8 is beta Vanadium nitride-derived structured and crystallizes in the hexagonal P6_3mc space group. The structure is three-dimensional. Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with two equivalent MnO6 octahedra, an edgeedge with one MnO6 octahedra, and edges with four equivalent TiO6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are a spread of Ti–O bond distances ranging from 1.96–2.01 Å. Mn4+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with six equivalent TiO6 octahedra and edges with three equivalent TiO6 octahedra. The corner-sharing octahedral tilt angles are 50°. There is three shorter (1.90 Å) and three longer (1.98 Å) Mn–O bond length. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Ti4+ and one Mn4+ atom. In the second O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two equivalent Ti4+ and one Mn4+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to three equivalent Ti4+ atoms. In the fourth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three equivalent Ti4+ atoms.