Materials Data on Rb2PbO3 by Materials Project

Abstract

Rb2PbO3 is Krennerite-derived structured and crystallizes in the orthorhombic Cmc2_1 space group. The structure is three-dimensional. Rb1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Rb–O bond distances ranging from 2.82–3.23 Å. Pb4+ is bonded to five O2- atoms to form distorted edge-sharing PbO5 trigonal bipyramids. There are a spread of Pb–O bond distances ranging from 2.06–2.23 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 5-coordinate geometry to four equivalent Rb1+ and one Pb4+ atom. In the second O2- site, O2- is bonded to four equivalent Rb1+ and two equivalent Pb4+ atoms to form a mixture of distorted corner, edge, and face-sharing ORb4Pb2 octahedra. The corner-sharing octahedra tilt angles range from 37–49°.