Materials Data on NaH2CSO4F3 by Materials Project

Abstract

NaH2SO4CF3 crystallizes in the orthorhombic Pnma space group. The structure is two-dimensional and consists of four fluoroform molecules and two NaH2SO4 sheets oriented in the (0, 0, 1) direction. In each NaH2SO4 sheet, Na1+ is bonded to six O2- atoms to form face-sharing NaO6 octahedra. There are a spread of Na–O bond distances ranging from 2.34–2.47 Å. H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. S4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. All S–O bond lengths are 1.46 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one S4+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Na1+ and one S4+ atom. In the third O2- site, O2- is bonded in a distorted water-like geometry to two equivalent Na1+ and two equivalent H1+ atoms.