The epoxidation of olefins (Figure ) by hydrogen peroxide was studied both experimentally and with DFT by Berksessel and co-workers . For these reactions, using fluorinated alcohols such as hexafluoroisopropanol (HFIP) accelerates the rate in relation to 1,4-dioxane . From 0-4 molecules of HFIP were studied with the reactants quantum mechanically in the gasphase, and then the whole system was treated with PCM . Acetone was chosen as a model solvent for HFIP, because of its similar dielectric constant, with some additional considerations for cavitation. The activation enthalpies were shown to decrease with increasing number of HFIP molecules, while increasing contribution of entropy lead to the Gibbs free energy of activation reaching saturation with three or four HFIP molecules. The same theoretical study was done using methanol as a solvent, but increasing the number of methanol molecules had no influence. However, the activation barrier was reduced more with methanol than with HFIP. This result shows that methanol acts only as a polar solvent for the reaction, and explicit hydrogenbonding with methanol does not affect the reaction rate, as it does with HFIP.