Materials Data on Eu3As4 by Materials Project

Abstract

Eu3As4 crystallizes in the orthorhombic Fdd2 space group. The structure is three-dimensional. there are two inequivalent Eu2+ sites. In the first Eu2+ site, Eu2+ is bonded in a 8-coordinate geometry to eight As+1.50- atoms. There are a spread of Eu–As bond distances ranging from 3.12–3.23 Å. In the second Eu2+ site, Eu2+ is bonded in a 8-coordinate geometry to eight As+1.50- atoms. There are a spread of Eu–As bond distances ranging from 3.12–3.26 Å. There are two inequivalent As+1.50- sites. In the first As+1.50- site, As+1.50- is bonded in a 7-coordinate geometry to six Eu2+ and one As+1.50- atom. The As–As bond length is 2.53 Å. In the second As+1.50- site, As+1.50- is bonded in a 8-coordinate geometry to six Eu2+ and two As+1.50- atoms. The As–As bond length is 2.63 Å.