Homoconjugation in Aryl Benzyl Sulphides

The possible occurrence of non classical conjugation involving sulphur in aryl benzyl sulphides has been investigated. From the charge transfer spectra and the stability constants of the complexes formed between iodine and aryl benzyl sulphides, and from the UV spectral behaviour of the ArI–S–CH₂–Ar, system, it may be concluded that through space conjugation in aryl benzyl sulphides is not important.