Materials Data on NbOF3 by Materials Project

Abstract

NbOF3 crystallizes in the tetragonal P-42_1m space group. The structure is one-dimensional and consists of two NbOF3 ribbons oriented in the (0, 0, 1) direction. Nb5+ is bonded to two equivalent O2- and four F1- atoms to form a mixture of edge and corner-sharing NbO2F4 octahedra. The corner-sharing octahedral tilt angles are 13°. There is one shorter (1.92 Å) and one longer (1.97 Å) Nb–O bond length. There are two shorter (1.88 Å) and two longer (2.14 Å) Nb–F bond lengths. O2- is bonded in a linear geometry to two equivalent Nb5+ atoms. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a water-like geometry to two equivalent Nb5+ atoms. In the second F1- site, F1- is bonded in a single-bond geometry to one Nb5+ atom.