Materials Data on BiP(PbO2)4 by Materials Project

Abstract

Pb4BiO4PO4 crystallizes in the triclinic P-1 space group. The structure is two-dimensional and consists of one Pb4BiO4PO4 sheet oriented in the (0, 0, 1) direction. there are four 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 2.28–3.06 Å. In the second 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 2.26–2.97 Å. In the third Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.33–3.06 Å. In the fourth 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 2.25–2.92 Å. Bi3+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Bi–O bond distances ranging from 2.10–2.42 Å. P5+ is bonded in a tetrahedral geometry to four O2- atoms. There is two shorter (1.56 Å) and two longer (1.57 Å) P–O bond length. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Bi3+ and one P5+ atom. In the third O2- site, O2- is bonded in a single-bond geometry to four Pb2+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to four Pb2+ and one Bi3+ atom. In the fifth O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of edge and corner-sharing OPb4 tetrahedra. In the sixth O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of edge and corner-sharing OPb4 tetrahedra. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one Bi3+ and one P5+ atom. In the eighth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two Pb2+ and one Bi3+ atom.