Application of Non-Linear Hammett Relationship to Surface Tensions and Dipole Moments in Estimating the Associative Behavior of Phenols: A Chemical Educational Article to Graduate Students

摘要

Non-linear Hammett relationship was applied to surface tensions (γ) and dipole moments (μ) of some meta and para substituted phenols. The non-linearity of log y versus Hammett σ correlation was explained in terms of Eotvos constant, Ramsay-Shields equation, Trouton's rule, order of association, sandwich type molecular pairs and number of hydrogen bond donor-acceptor sites (H_(ad)). And non-linearity of log μ versus Hammett σ correlation was explained in terms of the net bulk property of the entire molecule and not based on a chemical property like a localized reaction center.