S. A. Abbasi
1981
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Journal
Zeitschrift für Physikalische Chemie
Abstract
Protonation of 8-hydroxyquinoline-5-sulfonic acid and it's 7-bromo, 7-iodo, 7-nitro and 7-nitroso derivatives have been studied by spectrophotometry and potentiometry. Attempts to apply the Taft equation for linear free energy correlations between protonation constants and Taft substituent constants for ortho substituents were unsuccessful. Better correlation was obtained with the Hammett substituent constants.