Materials Data on BeF2 by Materials Project

Abstract

BeF2 is Low Tridymite-like structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Be2+ is bonded to four F1- atoms to form corner-sharing BeF4 tetrahedra. There are a spread of Be–F bond distances ranging from 1.55–1.57 Å. There are four inequivalent F1- sites. In the first F1- site, F1- is bonded in a bent 150 degrees geometry to two equivalent Be2+ atoms. In the second F1- site, F1- is bonded in a bent 150 degrees geometry to two equivalent Be2+ atoms. In the third F1- site, F1- is bonded in a bent 150 degrees geometry to two equivalent Be2+ atoms. In the fourth F1- site, F1- is bonded in a bent 150 degrees geometry to two equivalent Be2+ atoms.