Unstable intermediates. Part XLIII. Electron spin resonance spectra of sulphur and sulphur nitride radicals in strongly acidic media
Abstract
Possible structures for radicals formed from sulphur and sulphur nitrides in sulphuric acid, oleum, and antimony pentafluoride are deduced from their electron spin resonance spectra in the fluid and solid state. The form of the 33S hyperfine tensor leads to the postulate that the sulphur radical is σ*, possibly of the form X2S–SX2+, where X is derived from the medium. The 14N tensor for the sulphur nitride radical is in accord with the formulation S2N2+, having a square-planar structure with an in-plane distortion.