Materials Data on Rb2Be2O3 by Materials Project

Abstract

Rb2Be2O3 crystallizes in the tetragonal P4_32_12 space group. The structure is three-dimensional. Rb1+ is bonded in a 2-coordinate geometry to four equivalent Rb1+, one Be2+, and nine O2- atoms. There are one shorter (3.16 Å) and three longer (3.29 Å) Rb–Rb bond lengths. The Rb–Be bond length is 2.89 Å. There are a spread of Rb–O bond distances ranging from 2.96–3.26 Å. Be2+ is bonded in a trigonal planar geometry to one Rb1+ and three O2- atoms. There is two shorter (1.56 Å) and one longer (1.57 Å) Be–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to six equivalent Rb1+ and two equivalent Be2+ atoms. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to six equivalent Rb1+ and two equivalent Be2+ atoms.