Materials Data on La2Be2O5 by Materials Project

Abstract

La2Be2O5 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Be2+ is bonded to four O2- atoms to form corner-sharing BeO4 tetrahedra. There are a spread of Be–O bond distances ranging from 1.61–1.70 Å. La3+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of La–O bond distances ranging from 2.42–3.02 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Be2+ and four equivalent La3+ atoms. In the second O2- site, O2- is bonded in a distorted linear geometry to two equivalent Be2+ and four equivalent La3+ atoms. In the third O2- site, O2- is bonded in a 1-coordinate geometry to one Be2+ and four equivalent La3+ atoms. In the fourth O2- site, O2- is bonded in a distorted linear geometry to two equivalent Be2+ and four equivalent La3+ atoms.