Materials Data on VPPbO7 by Materials Project
VPbPO7 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent V5+ sites. In the first V5+ site, V5+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of V–O bond distances ranging from 1.71–2.11 Å. In the second V5+ site, V5+ is bonded to six O2- atoms to form distorted VO6 octahedra that share corners with four PO4 tetrahedra. There are a spread of V–O bond distances ranging from 1.68–2.23 Å. There are two inequivalent Pb4+ sites. In the first 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 2.53–2.73 Å. In the second Pb4+ site, Pb4+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Pb–O bond distances ranging from 2.57–2.76 Å. There are two 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 VO6 octahedra. The corner-sharing octahedral tilt angles are 57°. There are a spread of P–O bond distances ranging from 1.54–1.57 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with three equivalent VO6 octahedra. The corner-sharing octahedra tilt angles range from 50–54°. There are a spread of P–O bond distances ranging from 1.53–1.57 Å. There are fourteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to one V5+ and one P5+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to one V5+, one Pb4+, and one P5+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one V5+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to two Pb4+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a single-bond geometry to one V5+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one V5+ and one P5+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one V5+ and one Pb4+ atom. In the eighth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one V5+, one Pb4+, and one P5+ atom. In the ninth O2- site, O2- is bonded in a single-bond geometry to one P5+ atom. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to one V5+ and two equivalent Pb4+ atoms. In the eleventh O2- site, O2- is bonded in a distorted single-bond geometry to one V5+ and two Pb4+ atoms. In the twelfth O2- site, O2- is bonded in a distorted single-bond geometry to one V5+ and two equivalent Pb4+ atoms. In the thirteenth O2- site, O2- is bonded in a bent 120 degrees geometry to one V5+ and one P5+ atom. In the fourteenth O2- site, O2- is bonded in a distorted single-bond geometry to one V5+ and two Pb4+ atoms.