NMR Spectroscopy of Polyfluorinated Allyl Cations

The results of the NMR study of the hydrocarbon allyl cations are briefly surveyed. The ¹³C and ¹⁹F NMR spectra of polyfluorinated cyclic and acyclic allyl cations are considered and the spectral features of their formation in solutions are discussed. The influence of substituents and of the positive charge on the chemical shifts and the spin–spin coupling constants ¹J(¹³C–¹⁹F) and ⁴J(¹⁹F–¹⁹F) of polyfluorinated allyl cations are considered. NMR data are presented on the relative stabilities of polyfluorinated allyl cations.
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