Hammett Substituent Constants for Electron-withdrawing Substituents: Dissociation of Phenols, Anilinium Ions and Dimethylanilinium Ions
作者:M. M. Fickling、A. Fischer、B. R. Mann、J. Packer、J. Vaughan
DOI:10.1021/ja01525a027
日期:1959.8
gain more information concerning the a-constant, the thermodynamic pK values, in water a t 25", of a number of substituted phenols, dimethylanilines and anilines have been measured. Discussion of substituent constants is concerned primarily with the p-NOz, p-CN, 3,4-C4H4 and p-NO groups. The reaction constant for dimethylanilinium iondissociation has been obtained and an explanation has been offered
88. Symmetrical triad prototropic systems. Part VIII. The analogy between symmetrical triad systems and aromatic side-chain reactivity, and the effect of m-substitution on mobility and equilibrium in the αγ-diphenylmethyleneazomethine system