Materials Data on VP2Pb2O9 by Materials Project
Pb2VO(PO4)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. V4+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of V–O bond distances ranging from 1.64–2.48 Å. There are two inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Pb–O bond distances ranging from 2.47–2.81 Å. In the second Pb2+ site, Pb2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Pb–O bond distances ranging from 2.37–3.02 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded in a tetrahedral geometry to four O2- atoms. There is three shorter (1.56 Å) and one longer (1.57 Å) P–O bond length. In the second P5+ site, P5+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of P–O bond distances ranging from 1.54–1.56 Å. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one V4+, one Pb2+, and one P5+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one V4+, one Pb2+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to two Pb2+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a single-bond geometry to one V4+ and one Pb2+ atom. In the seventh O2- site, O2- is bonded in a 2-coordinate geometry to one V4+, one Pb2+, and one P5+ atom. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to one V4+, one Pb2+, and one P5+ atom. In the ninth O2- site, O2- is bonded in a distorted single-bond geometry to one V4+, one Pb2+, and one P5+ atom.