Materials Data on P2PbO7 by Materials Project

Abstract

PbP2O7 crystallizes in the tetragonal P4_12_12 space group. The structure is three-dimensional. there are two inequivalent Pb4+ sites. In the first Pb4+ site, Pb4+ is bonded to six O2- atoms to form PbO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Pb–O bond distances ranging from 2.53–2.61 Å. In the second Pb4+ site, Pb4+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.38–2.47 Å. There are three inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one PbO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedral tilt angles are 53°. There are a spread of P–O bond distances ranging from 1.49–1.63 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one PbO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedral tilt angles are 58°. There are a spread of P–O bond distances ranging from 1.49–1.64 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one PbO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedral tilt angles are 51°. There are a spread of P–O bond distances ranging from 1.48–1.63 Å. There are eleven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Pb4+ and one P5+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Pb4+ and one P5+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to two P5+ atoms. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one Pb4+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Pb4+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to one Pb4+ and one P5+ atom. In the seventh O2- site, O2- is bonded in a bent 120 degrees geometry to two P5+ atoms. In the eighth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two equivalent Pb4+ atoms. In the ninth O2- site, O2- is bonded in a distorted single-bond geometry to one Pb4+ and one P5+ atom. In the tenth O2- site, O2- is bonded in a bent 120 degrees geometry to two P5+ atoms. In the eleventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two equivalent Pb4+ atoms.