Materials Data on PHPb2F10 by Materials Project
Pb2F2(HF2)(PF6) crystallizes in the triclinic P-1 space group. The structure is two-dimensional and consists of one PF6 cluster and one Pb2HF4 sheet oriented in the (0, 0, 1) direction. In the PF6 cluster, P5+ is bonded in an octahedral geometry to six F1- atoms. All P–F bond lengths are 1.64 Å. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one P5+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one P5+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one P5+ atom. In the Pb2HF4 sheet, Pb2+ is bonded in a 5-coordinate geometry to five F1- atoms. There are a spread of Pb–F bond distances ranging from 2.35–2.63 Å. H1+ is bonded in a linear geometry to two equivalent F1- atoms. Both H–F bond lengths are 1.15 Å. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted trigonal planar geometry to three equivalent Pb2+ atoms. In the second F1- site, F1- is bonded in a single-bond geometry to two equivalent Pb2+ and one H1+ atom.