Materials Data on BiOF by Materials Project

Abstract

BiOF crystallizes in the orthorhombic Pbca space group. The structure is three-dimensional. there are two inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a 5-coordinate geometry to three O2- and two F1- atoms. There are a spread of Bi–O bond distances ranging from 2.16–2.34 Å. There are one shorter (2.28 Å) and one longer (2.44 Å) Bi–F bond lengths. In the second Bi3+ site, Bi3+ is bonded to three O2- and four F1- atoms to form a mixture of distorted edge and corner-sharing BiO3F4 pentagonal bipyramids. There are a spread of Bi–O bond distances ranging from 2.18–2.25 Å. There are a spread of Bi–F bond distances ranging from 2.51–2.81 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to three Bi3+ atoms. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to three Bi3+ atoms. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted trigonal planar geometry to three Bi3+ atoms. In the second F1- site, F1- is bonded in a 1-coordinate geometry to three Bi3+ atoms.