Materials Data on BeH4NF3 by Materials Project

Abstract

BeF3NH4 crystallizes in the monoclinic Pc space group. The structure is one-dimensional and consists of four ammonium molecules and two BeF3 ribbons oriented in the (0, 1, 0) direction. In each BeF3 ribbon, there are two inequivalent Be2+ sites. In the first Be2+ site, Be2+ is bonded to four F1- atoms to form corner-sharing BeF4 tetrahedra. There are a spread of Be–F bond distances ranging from 1.49–1.61 Å. In the second Be2+ site, Be2+ is bonded to four F1- atoms to form corner-sharing BeF4 tetrahedra. There are a spread of Be–F bond distances ranging from 1.49–1.61 Å. There are six inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Be2+ atom. In the second F1- site, F1- is bonded in a distorted single-bond geometry to one Be2+ atom. In the third F1- site, F1- is bonded in a bent 120 degrees geometry to two Be2+ atoms. In the fourth F1- site, F1- is bonded in a single-bond geometry to one Be2+ atom. In the fifth F1- site, F1- is bonded in a single-bond geometry to one Be2+ atom. In the sixth F1- site, F1- is bonded in a bent 120 degrees geometry to two Be2+ atoms.