Materials Data on NbNO by Materials Project

Abstract

NbON crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Nb5+ sites. In the first Nb5+ site, Nb5+ is bonded to three N3- and three O2- atoms to form a mixture of distorted edge and corner-sharing NbN3O3 octahedra. The corner-sharing octahedra tilt angles range from 22–32°. There are two shorter (2.05 Å) and one longer (2.17 Å) Nb–N bond lengths. There are a spread of Nb–O bond distances ranging from 1.96–2.21 Å. In the second Nb5+ site, Nb5+ is bonded to four N3- and two O2- atoms to form a mixture of distorted edge and corner-sharing NbN4O2 octahedra. The corner-sharing octahedra tilt angles range from 22–32°. There are a spread of Nb–N bond distances ranging from 2.00–2.29 Å. There are one shorter (1.93 Å) and one longer (2.16 Å) Nb–O bond lengths. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded in a distorted T-shaped geometry to three Nb5+ atoms. In the second N3- site, N3- is bonded to four Nb5+ atoms to form a mixture of distorted edge and corner-sharing NNb4 trigonal pyramids. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to three Nb5+ atoms. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to two Nb5+ atoms.