Materials Data on Zr3N2O3 by Materials Project

Abstract

Zr3N2O3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent Zr4+ sites. In the first Zr4+ site, Zr4+ is bonded to two equivalent N3- and four O2- atoms to form distorted ZrN2O4 octahedra that share corners with four ZrN2O4 octahedra and edges with six equivalent ZrN3O3 octahedra. The corner-sharing octahedra tilt angles range from 25–36°. Both Zr–N bond lengths are 2.17 Å. All Zr–O bond lengths are 2.15 Å. In the second Zr4+ site, Zr4+ is bonded to three equivalent N3- and three O2- atoms to form a mixture of distorted corner and edge-sharing ZrN3O3 octahedra. The corner-sharing octahedra tilt angles range from 25–56°. There are two shorter (2.15 Å) and one longer (2.22 Å) Zr–N bond lengths. There are a spread of Zr–O bond distances ranging from 2.11–2.36 Å. N3- is bonded to four Zr4+ atoms to form a mixture of distorted corner and edge-sharing NZr4 trigonal pyramids. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to four Zr4+ atoms. In the second O2- site, O2- is bonded in a distorted T-shaped geometry to three Zr4+ atoms.