Materials Data on Ti3N2O3 by Materials Project

Abstract

Ti3N2O3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to two equivalent N3- and four O2- atoms to form distorted TiN2O4 octahedra that share corners with four TiN2O4 octahedra and edges with six equivalent TiN3O3 octahedra. The corner-sharing octahedra tilt angles range from 21–31°. Both Ti–N bond lengths are 2.02 Å. There are two shorter (1.99 Å) and two longer (2.01 Å) Ti–O bond lengths. In the second Ti4+ site, Ti4+ is bonded to three equivalent N3- and three O2- atoms to form a mixture of distorted edge and corner-sharing TiN3O3 octahedra. The corner-sharing octahedra tilt angles range from 21–54°. There are two shorter (2.00 Å) and one longer (2.05 Å) Ti–N bond lengths. There are a spread of Ti–O bond distances ranging from 1.95–2.21 Å. N3- is bonded to four Ti4+ atoms to form a mixture of edge and corner-sharing NTi4 trigonal pyramids. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted see-saw-like geometry to four Ti4+ atoms. In the second O2- site, O2- is bonded in a distorted T-shaped geometry to three Ti4+ atoms.