ELECTRODE-REACTIONS OF NITROXIDE RADICALS .10. KINETICS AND MECHANISMS OF THE REDOX REACTIONS OF THE 2,2,6,6-TETRAMETHYLPIPERIDINE-1-OXYL DERIVATIVES IN ACETONITRILE SOLUTIONS ON THE GOLD ELECTRODE - EXPERIMENT AND SIMULATION ANALYSIS

被引：31

作者：

KRZYCZMONIK, P ^{[1
]}

SCHOLL, H ^{[1
]}

机构：

[1] UNIV LODZ,INST CHEM,NARUTOWICZA 68,PL-90136 LODZ,POLAND

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1992年 / 335卷 / 1-2期

关键词：

D O I：

10.1016/0022-0728(92)80245-Y

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The redox reaction Nox. reversible Nox+ + e- of the 8 free nitroxide radicals, which are derivatives of 2,2,6,6-tetramethylpiperidine-1-oxyl, were investigated in acetonitrile solutions (c = 2.5 x 10(-4)-1 x 10(-2) mol dm-3) on a gold working electrode. Cyclic voltammetry (v = 0.02-10.0 V s-1), impedance measurements and controlled potential electrolysis were used. The reaction parameters (E-degrees(f) D(ox), alphan) and the Taft coefficients sigma" were calculated on the basis of the experimental results. The kinetics and the mechanisms of these processes are discussed, and a model of the reaction mechanism with weak adsorption of both forms of the reactants is proposed on the basis of the simulation analysis.

引用

页码：233 / 251

页数：19

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