Materials Data on RbErO2 by Materials Project
RbErO2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Rb1+ is bonded in a 6-coordinate geometry to six equivalent O2- atoms. All Rb–O bond lengths are 2.93 Å. Er3+ is bonded to six equivalent O2- atoms to form edge-sharing ErO6 octahedra. All Er–O bond lengths are 2.31 Å. O2- is bonded to three equivalent Rb1+ and three equivalent Er3+ atoms to form a mixture of distorted edge and corner-sharing ORb3Er3 octahedra. The corner-sharing octahedral tilt angles are 0°.
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