Mechanism of antioxidant reaction of vitamin E: charge transfer and tunneling effect in proton-transfer reaction

…, A Kuranaka, H Tsuboi, U Nagashima…

文献索引：Nagaoka, Shin-ichi; Kuranaka, Aya; Tsuboi, Hideki; Nagashima, Umpei; Mukai, Kazuo Journal of Physical Chemistry, 1992 , vol. 96, # 3 p. 2754 - 2761

全文：HTML全文

被引用次数: 102

摘要

In order to shed light on the mechanism of proton-transfer reactions, a kinetic and ab initio study of the antioxidant action (intermolecular proton transfer) of vitamin E derivatives has been carried out. The second-order rate constants (k,'s) for the reaction of tocopherols (TocH's) with variously substituted phenoxy1 radicals (Ph0” s) in ethanol were measured with a stopped-flow spectrophotometer. The half-wave reduction potentials (Ellis) of Ph0” s ...