Materials Data on As3Pb5O12F by Materials Project
Pb5As3O12F crystallizes in the hexagonal P6_3/m space group. The structure is three-dimensional. there are two inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Pb–O bond distances ranging from 2.59–3.06 Å. In the second Pb2+ site, Pb2+ is bonded in a 7-coordinate geometry to six O2- and one F1- atom. There are a spread of Pb–O bond distances ranging from 2.53–3.05 Å. The Pb–F bond length is 2.52 Å. As5+ is bonded in a tetrahedral geometry to four O2- atoms. There is three shorter (1.73 Å) and one longer (1.74 Å) As–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one As5+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one As5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one As5+ atom. F1- is bonded in a trigonal planar geometry to three equivalent Pb2+ atoms.