Materials Data on NbO2F by Materials Project

Abstract

NbO2F crystallizes in the monoclinic Cc space group. The structure is three-dimensional. 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 24–26°. There are a spread of Nb–O bond distances ranging from 1.88–1.99 Å. There are one shorter (2.11 Å) and one longer (2.20 Å) Nb–F bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent Nb5+ atoms. In the second 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 equivalent Nb5+ atoms.