[Not Available].
Strehlow's or Hammett's non-thermodynamic assumptions do not lead to the same result when the proton medium activity coefficient between DMF and acetonitrile has to be determined. Moreover it seems that there is a difficulty in justifying the data related to the acid HA medium activity coefficients with Hammett's approach. Therefore account was taken only of Strehlow's approach to correlate the acidity scales determined in acetonitrile and in DMF. However, to obtain correlations valuable to one pK unit, it was necessary to classify the acid-base couples in groups such as amines, phenols, etc. The importance of homoconjugation in the two solvents could be interpreted.
Demange-Guerin
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Laboratoire de Chime Analytique associé au C.N.R.S., 10 rue Vauquelin, Paris V(o) France.