Materials Data on KH3F4 by Materials Project

Abstract

KH3F4 crystallizes in the trigonal R-3c space group. The structure is three-dimensional. K1+ is bonded in a distorted body-centered cubic geometry to eight F1- atoms. There are six shorter (2.74 Å) and two longer (3.10 Å) K–F bond lengths. H1+ is bonded in a linear geometry to two F1- atoms. There is one shorter (1.00 Å) and one longer (1.41 Å) H–F bond length. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to two equivalent K1+ and one H1+ atom. In the second F1- site, F1- is bonded in a trigonal planar geometry to two equivalent K1+ and three equivalent H1+ atoms.