13C NMR chemical shifts of thiols,sulfinic acids,sulfinyl chlorides,sulfonic acids and sulfonic anhydrides

¹³C NMR spectra of thiols, sulfinic acids, sulfinyl chlorides, sulfonic acids and sulfonic anhydrides have been obtained. The data are discussed in terms of the additivity of the deshielding effects exerted by the sulfur functionality at the α- or β-position, and the shielding effects produced by the sulfur function at the γ-position.