Materials Data on Sb2Pb2O7 by Materials Project

Abstract

Pb2Sb2O7 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Pb2+ is bonded in a hexagonal planar geometry to six equivalent O2- atoms. All Pb–O bond lengths are 2.50 Å. Sb5+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are six shorter (2.17 Å) and two longer (2.33 Å) Sb–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Pb2+ and two equivalent Sb5+ atoms to form a mixture of distorted corner and edge-sharing OSb2Pb2 tetrahedra. In the second O2- site, O2- is bonded to four equivalent Sb5+ atoms to form a mixture of corner and edge-sharing OSb4 tetrahedra.