The quaternisation reaction of phosphines and amines in aliphatic alcohols. A similarity analysis using the isokinetic, isosolvent and isoselective relationshipsElectronic supplementary information (ESI) available: Table S1 containing literature values of solvent parameters for alkan-1-ols in five different scales and Table S2 with rate constants for the quaternisation of triethylamine by iodoethane at different temperatures in methanol, ethanol, propan-1-ol and butan-1-ol. See http://www.rsc.org/suppdata/ob/b3/b316556f