Materials Data on V6PbO11 by Materials Project
PbV6O11 crystallizes in the hexagonal P6_3mc space group. The structure is three-dimensional. there are four inequivalent V+3.33+ sites. In the first V+3.33+ site, V+3.33+ is bonded to five O2- atoms to form corner-sharing VO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 40–57°. There are a spread of V–O bond distances ranging from 1.91–2.39 Å. In the second V+3.33+ site, V+3.33+ is bonded to six O2- atoms to form VO6 octahedra that share corners with four VO6 octahedra, corners with two equivalent VO5 trigonal bipyramids, and edges with four equivalent VO6 octahedra. The corner-sharing octahedra tilt angles range from 52–55°. There are a spread of V–O bond distances ranging from 1.95–2.05 Å. In the third V+3.33+ site, V+3.33+ is bonded to six O2- atoms to form VO6 octahedra that share corners with six equivalent VO6 octahedra, corners with three equivalent VO5 trigonal bipyramids, and a faceface with one VO6 octahedra. The corner-sharing octahedral tilt angles are 55°. There are three shorter (2.04 Å) and three longer (2.07 Å) V–O bond lengths. In the fourth V+3.33+ site, V+3.33+ is bonded to six O2- atoms to form VO6 octahedra that share corners with six equivalent VO6 octahedra, corners with three equivalent VO5 trigonal bipyramids, and a faceface with one VO6 octahedra. The corner-sharing octahedral tilt angles are 52°. There are three shorter (2.00 Å) and three longer (2.06 Å) V–O bond lengths. Pb2+ is bonded in a 12-coordinate geometry to twelve O2- atoms. There are a spread of Pb–O bond distances ranging from 2.52–3.23 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to three V+3.33+ and one Pb2+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to three V+3.33+ and two equivalent Pb2+ atoms. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to three V+3.33+ and one Pb2+ atom. In the fourth O2- site, O2- is bonded in a distorted trigonal pyramidal geometry to four V+3.33+ atoms. In the fifth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to four V+3.33+ atoms.