Wide-line N.M.R. analysis of the molecular structure of FSO2OF

Abstract

This article describes an n.m.r. investigation of the magnetic field dependence of the ¹⁹F second moment in solid FSO₂OF (fluorine fluorosulphate) at 77 K, in order to clarify its molecular structure. These second moment data are consistent with an F—F distance of > 3.6 Å which establishes the molecular structure to be of the trans form; and give a range for the anisotropy of the fluorine chemical shielding tensor in the O—F section of the molecule of 7 × 10² < (σ∥–σ⊥) < 10³ p.p.m.