The Measurement of Transfer Enthalpy in Mixed Solvent (Part I).Enthalpies of Solution of Aniline, Pyridine and Benzylamine in the Isodielectric Binary Mixtures of Methanol with Acetonitrile,Nitrobenzene and Nitromethane

초록

Enthalpies of solution of aniline, pyridine and benzylamine in iso-dielectric mixtures of methanol with acetonitrile (AN), nitrobenzene (NB) and nitromethane (NM) have been measured calorimetrically. The solute-solvent was analyzed using a model developed by Waghorne et al. And found that the relatively weak base, aniline, tended to behave anomalously, especially in the NB and NM binary systems by forming bidentate hydrogen bonds between the two-NH2 hydrogens and the two-NO2 oxygens. Pyridine and benzylamine were found to be preferentially solvated by methanol in all the binary mixtures.