Materials Data on CrF5 by Materials Project

Abstract

CrF5 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. Cr5+ is bonded to six F1- atoms to form edge-sharing CrF6 octahedra. There is two shorter (1.77 Å) and four longer (1.94 Å) Cr–F bond length. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a water-like geometry to two equivalent Cr5+ and two equivalent F1- atoms. Both F–F bond lengths are 3.01 Å. In the second F1- site, F1- is bonded in a single-bond geometry to one Cr5+ and two equivalent F1- atoms. Both F–F bond lengths are 2.79 Å. In the third F1- site, F1- is bonded in a 10-coordinate geometry to ten F1- atoms. Both F–F bond lengths are 3.03 Å.