Materials Data on K2Be2O3 by Materials Project

K2Be2O3 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. K1+ is bonded in a 1-coordinate geometry to six O2- atoms. There are a spread of K–O bond distances ranging from 2.68–3.27 Å. Be2+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.49 Å) and two longer (1.58 Å) Be–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted linear geometry to four equivalent K1+ and two equivalent Be2+ atoms. In the second O2- site, O2- is bonded in a 2-coordinate geometry to four equivalent K1+ and two equivalent Be2+ atoms.