Materials Data on AlF3 by Materials Project

Abstract

AlF3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent Al3+ sites. In the first Al3+ site, Al3+ is bonded to six F1- atoms to form corner-sharing AlF6 octahedra. The corner-sharing octahedra tilt angles range from 14–32°. All Al–F bond lengths are 1.82 Å. In the second Al3+ site, Al3+ is bonded to six F1- atoms to form corner-sharing AlF6 octahedra. The corner-sharing octahedra tilt angles range from 15–32°. All Al–F bond lengths are 1.82 Å. There are four inequivalent F1- sites. In the first F1- site, F1- is bonded in a linear geometry to two equivalent Al3+ atoms. In the second F1- site, F1- is bonded in a linear geometry to two equivalent Al3+ atoms. In the third F1- site, F1- is bonded in a bent 150 degrees geometry to two Al3+ atoms. In the fourth F1- site, F1- is bonded in a bent 150 degrees geometry to two equivalent Al3+ atoms.