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Solvent and substituent effects on the electrochemical oxidation of para- and meta-substituted anilines

✍ Scribed by D. S. Bhuvaneshwari; K. P. Elango

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
293 KB
Volume
39
Category
Article
ISSN
0538-8066

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✦ Synopsis

Abstract

Electrochemical oxidation of 15 para‐ and meta‐substituted anilines in different mole fractions of water in 2‐methylpropan‐2‐ol has been investigated in the presence of 0.1 M sulfuric acid as a supporting electrolyte. The oxidation potential data of anilines correlate well with the Brown–Okamoto's substituent constants affording a negative reaction constant. The effect of para‐ and meta‐substituents on the oxidation potential confirms to Swain's F and R, affording negative reaction constants. The oxidation potential values also correlate satisfactorily with macroscopic solvent parameter such as relative permittivity, ε~r~. The results of Kamlet–Taft multiple correlation analysis show that specific solute–solvent interactions play a dominant role in governing the reactivity. © 2007 Wiley Periodicals, Inc. Int J Chem Kinet 39: 289–297, 2007

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