Materials Data on Na2Be2O3 by Materials Project

Abstract

Na2Be2O3 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Na1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Na–O bond distances ranging from 2.22–2.33 Å. Be2+ is bonded to four O2- atoms to form a mixture of edge and corner-sharing BeO4 tetrahedra. There are a spread of Be–O bond distances ranging from 1.62–1.79 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Na1+ and two equivalent Be2+ atoms to form distorted corner-sharing ONa4Be2 octahedra. The corner-sharing octahedral tilt angles are 66°. In the second O2- site, O2- is bonded in a 5-coordinate geometry to two equivalent Na1+ and three equivalent Be2+ atoms.