Abstract
Electrochemical reduction of imides i.e., N-phenyl phthalimide and substituted N-phenyl phthalimide (3-methyl and 3-chloro) has been studied on glassy carbon electrode under different pH condition using cyclic voltammetric technique. The kinetic parameters like cathodic peak potential E_(pc), cathodic peak current (i_(pc)), diffusion coefficient (D_o) and heterogeneous rate constant (ko) have been evaluated. Single irreversible/quasireversible reduction/oxidation waves were observed under different pH conditions due to the reduction/oxidation of >C=O moiety. The effect of sweep rate, concentration of the electroactive species were evaluated. The electrode process was shown to be diffusion controlled and irreversible involving adsorption effects. Cationic surfactant cetyltrimethyl ammonium bromide inhibited the reduction process. Effect of cationic surfactant on E_(pc), i_(pc), D_o and k_0 has been discussed. The effect of dielectric constant is studied in dimethyl sulphoxide, dimethyl formamide, acetonitrile. The electrolytic products were characterized/identified by controlled potential electrolysis.
NSTL