Behavior of the semiquinone anion radical of hypocrellin B produced by electrolysis in dimethylsulfoxide

被引：2

作者：

Zhou, JH ^{[1
]}

Wu, KW ^{[1
]}

Xia, SQ ^{[1
]}

Wang, XS ^{[1
]}

Zhang, BW ^{[1
]}

Cao, Y ^{[1
]}

机构：

[1] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100101, Peoples R China

来源：

RESEARCH ON CHEMICAL INTERMEDIATES | 2004年 / 30卷 / 4-5期

关键词：

hypocrellin B; electrolysis; semiquinone anion radical;

D O I：

10.1163/1568567041257553

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The behavior of the semiquinone anion radical of hypocrellin B (HB), produced by electrolysis, has been studied by cyclic voltammetry, steady-state electron spin resonance, time-resolved electron spin resonance and in situ UV-Vis spectra. The results showed that the formation mechanisms of HB-. were different between electrolysis and photolysis, and the disproportionation of semiquinone anion radical of HB (HB-.) could not occur in dimethylsulfoxide; on the contrary, a syn-proportionation reaction in which HB2- reacts with HB to form HB-. was observed experimentally. At the same time, the kinetic parameters of HB-. were obtained from the time-decay experiments of HB-..

引用

页码：439 / 449

页数：11

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