E. Uggerud, Correlation between alkyl cation affinities and proton affinities - a means to rationalise alkyl group substituent effects, EUR J MASS, 6(2), 2000, pp. 131-134
Using literature thermochemical data it is demonstrated that the known line
ar relationship between proton affinities and methyl cation affinities can
be extended to other alkyl groups (ethyl, i-propyl, t-butyl), It is suggest
ed that the slopes of the straight lines can be used to define a new set of
alkyl substituent constants.