Applications of S-33 NMR Spectroscopy

Results so far reported in the literature have demonstrated that S-33 NMR spectroscopy is a valuable tool, not only in the determination of molecular structure, but also in the study of the electronic distribution in organic and inorganic molecules, association and exchange phenomena in solution, effects of intermolecular interactions in different aggregation states and qualitative and quantitative analyses of mixtures of sulphur compounds. Notwithstanding this importance, S-33 NMR spectroscopy has so far been under-utilized because S-33 is a difficult nucleus to detect. However,the availability of a new generation of high-field spectrometers gives hope for further developing this technique. Preliminary results obtained in the field of solid-state NMR spectroscopy demonstrate its potential. This review discusses the most important applications of S-33 NMR spectroscopy. Moreover, since knowledge of the correlation between NMR parameters and structure is a prerequisite for any application, it also addresses the way in which S-33 NMR parameters change due to structural modifications in different functional groups. A compilation of S-33 parameters in different organic and inorganic functional groups has been provided.