Materials Data on GePb5O7 by Materials Project
Pb5GeO7 crystallizes in the orthorhombic Pbca space group. The structure is three-dimensional. there are five inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Pb–O bond distances ranging from 2.28–2.94 Å. In the second Pb2+ site, Pb2+ is bonded to four O2- atoms to form distorted PbO4 trigonal pyramids that share corners with two equivalent GeO4 tetrahedra. There are a spread of Pb–O bond distances ranging from 2.29–2.64 Å. In the third Pb2+ site, Pb2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Pb–O bond distances ranging from 2.31–3.18 Å. In the fourth Pb2+ site, Pb2+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Pb–O bond distances ranging from 2.24–2.80 Å. In the fifth Pb2+ site, Pb2+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Pb–O bond distances ranging from 2.24–2.93 Å. Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with two equivalent PbO4 trigonal pyramids. There are a spread of Ge–O bond distances ranging from 1.77–1.80 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to three Pb2+ and one Ge4+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to two Pb2+ and one Ge4+ atom. In the third O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of distorted edge and corner-sharing OPb4 tetrahedra. In the fourth O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of edge and corner-sharing OPb4 tetrahedra. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to three Pb2+ and one Ge4+ atom. In the sixth O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of distorted edge and corner-sharing OPb4 tetrahedra. In the seventh O2- site, O2- is bonded in a 1-coordinate geometry to two Pb2+ and one Ge4+ atom.