On the mechanism of the electrochemical reduction of N-methylpyridinium ion
作者： John G. Gaudiello , David Larkin , J.David Rawn , James J. Sosnowski , Eric E. Bancroft
DOI: 10.1016/0022-0728(82)87071-X
关键词: Ion 、 Radical 、 N-methylpyridinium 、 Photochemistry 、 Chemistry 、 Aqueous solution 、 Reaction rate constant 、 Electrochemistry 、 Inorganic chemistry 、 Nitrone 、 Spin trapping
摘要: The electrochemical reduction of N-methylpyridinium ion (NMP+) at concentrations <2 × 10−4 M in aqueous solution the pH range 5–11 has been shown to he a one-electron process which gives rise 1-methyl-1,4-dihydropyridinyl radicals. These pyridinyl radicals undergo rapid dimerization for bimolecular rate constant be excess 1 107 M−1 s−1. formal potential NMP+ 1.0 KCl is found −1.372 V vs. NHE. formation radical as transient intermediate electroreduction established by spin trapping using α-phenyl-N-tert-butyl nitrone.
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