Materials Data on Ge3Pb3O10 by Materials Project

Abstract

(PbGeO3)6O2 crystallizes in the trigonal R-3 space group. The structure is three-dimensional and consists of three hydrogen peroxide molecules and one PbGeO3 framework. In the PbGeO3 framework, Pb+2.67+ is bonded to five O2- atoms to form distorted PbO5 square pyramids that share corners with two equivalent PbO5 square pyramids, corners with five equivalent GeO4 tetrahedra, and edges with three equivalent PbO5 square pyramids. There are a spread of Pb–O bond distances ranging from 2.31–2.59 Å. Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with five equivalent PbO5 square pyramids and corners with two equivalent GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.76–1.80 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to two equivalent Ge4+ atoms. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Pb+2.67+ and one Ge4+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent Pb+2.67+ and one Ge4+ atom.