C and Hg nuclear magnetic resonance spectroscopic study of alkenemercurinium ions: Effect of methyl substituents on Hg chemical shifts

G A Olah; A Garcia-Luna

doi:10.1073/pnas.77.9.5036

C and Hg nuclear magnetic resonance spectroscopic study of alkenemercurinium ions: Effect of methyl substituents on Hg chemical shifts

Proc Natl Acad Sci U S A. 1980 Sep;77(9):5036-9. doi: 10.1073/pnas.77.9.5036.

Authors

G A Olah¹, A Garcia-Luna

Affiliation

¹ Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, California 90007.

Abstract

The long-lived ethylene, cyclohexene, and norbornenemercurinium ions prepared in superacidic, low-nucleophilic media have been studied by (13)C and (199)Hg NMR spectroscopy. The norbornenemercurinium ion shows temperature-dependent (13)C and (199)Hg NMR spectra, consistent with equilibration via rapid hydride and Wagner-Meerwin shifts. The (199)Hg NMR shifts of a series of alkylmercury bromides were also obtained in order to elucidate the effect of methyl substituents on (199)Hg NMR chemical shifts.