Materials Data on NbO2F by Materials Project

Abstract

NbO2F crystallizes in the monoclinic P2/c space group. The structure is three-dimensional. there are two inequivalent Nb5+ sites. In the first Nb5+ site, Nb5+ is bonded to four O2- and two equivalent F1- atoms to form corner-sharing NbO4F2 octahedra. The corner-sharing octahedra tilt angles range from 19–29°. There is two shorter (1.96 Å) and two longer (1.99 Å) Nb–O bond length. Both Nb–F bond lengths are 2.03 Å. In the second Nb5+ site, Nb5+ is bonded to four O2- and two equivalent F1- atoms to form corner-sharing NbO4F2 octahedra. The corner-sharing octahedra tilt angles range from 19–29°. There is two shorter (1.96 Å) and two longer (2.00 Å) Nb–O bond length. Both Nb–F bond lengths are 2.03 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Nb5+ atoms. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent Nb5+ atoms. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent Nb5+ atoms. F1- is bonded in a bent 150 degrees geometry to two Nb5+ atoms.