SHORT-RANGE SOLVATION BY FLUORINATED ALCOHOLS OF PROTON-TRANSFER COMPLEX-FORMATION BETWEEN PENTACHLOROPHENOL AND TRIETHYLAMINE - DETERMINATION OF SOLVATION CONSTANTS AND STOICHIOMETRIES

Primary and secondary solvation binding constants and stoichiometries are reported for the protic solvation by pentadecafluorooctanol (PFO) and trifluoroethanol (TFE) of the non-bonding electrons on triethylami ne (TEA) and on the oxygen of the proton-transfer complex formed by pe ntachlorophenol (PCP) and TEA. The solvation-sensitive apparent proton -transfer formation constant K-PT is measured in varying low concentra tions of the protic solvent S in benzene bulk solvent, and the solvati on binding constants and stoichiometries are determined. A two-stage s olvation model is supported, as observed in earlier studies of similar systems. The primary solvation stage involves a single solvent alcoho l molecule, whereas the secondary stage involves several solvent molec ules.