Materials Data on Sr5Pb3F by Materials Project

Sr5Pb3F crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. there are two inequivalent Sr sites. In the first Sr site, Sr is bonded in a distorted square co-planar geometry to six Pb atoms. There are four shorter (3.46 Å) and two longer (4.03 Å) Sr–Pb bond lengths. In the second Sr site, Sr is bonded in a distorted single-bond geometry to five Pb and one F atom. There are a spread of Sr–Pb bond distances ranging from 3.53–3.66 Å. The Sr–F bond length is 2.54 Å. There are two inequivalent Pb sites. In the first Pb site, Pb is bonded in a 10-coordinate geometry to ten Sr atoms. In the second Pb site, Pb is bonded in a 9-coordinate geometry to eight Sr and one Pb atom. The Pb–Pb bond length is 3.16 Å. F is bonded in a tetrahedral geometry to four equivalent Sr atoms.