A mechanistic study of the electrochemical oxidation of 2,5-bis(2-thienyl)pyrroles
作者:Renee E. Niziurski-Mann、Chariclea Scordilis-Kelley、Tea Lane Liu、Michael P. Cava、Richard T. Carlin
DOI:10.1021/ja00056a011
日期:1993.2
systematic electrochemical investigation of these compounds has yielded rate constants of 36 000 M -1 s -1 for linear couplings 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 foir appreciable branched coupling of the electrochemical radical cations of an oligomer
合成了一系列 2,5-双(2-噻吩基)吡咯,其中 α-噻吩质子和/或 β-吡咯质子已被 Me 或 Br 取代基取代。对这些化合物的系统电化学研究已经得出,电化学产生的阳离子自由基的线性耦合速率常数为 36 000 M -1 s -1 ,阳离子自由基的支链偶联反应速率常数为 14 000-17 000 M -1 s -1 。这些结果构成了导电聚合物低聚物前体电化学自由基阳离子显着支化偶联的第一个动力学证据