A MECHANISTIC STUDY OF THE ELECTROCHEMICAL OXIDATION OF 2,5-BIS(2-THIENYL)PYRROLES

被引：64
|
作者：
NIZIURSKIMANN, RE [1 ]
SCORDILISKELLEY, C [1 ]
LIU, TL [1 ]
CAVA, MP [1 ]
CARLIN, RT [1 ]
机构：
[1] UNIV ALABAMA,DEPT CHEM,BOX 870336,TUSCALOOSA,AL 35487
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 1993年 / 115卷 / 03期
关键词：
D O I：
10.1021/ja00056a011
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A series of 2,5-bis(2-thienyl)pyrroles has been synthesized in which the alpha-thiophene protons and/or the beta-pyrrole protons have been replaced by Me or Br substituents. A systematic electrochemical investigation of these compounds has yielded rate constants of 36 000 M-1 s-1 for linear coupling of the electrochemically generated cation radicals and 14 000-17 000 M-1 s-1 for branched coupling reactions of the cation radicals. These results constitute the first kinetic evidence for appreciable branched coupling of the electrochemical radical cations of an oligomer precursor of a conducting polymer.
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收藏
页码：887 / 891
页数：5
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