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四甲基苯醌在氯化正丁基吡啶-AlCl_3室温熔盐中的电化学行为,和室温熔盐的酸碱度有关,在碱性熔盐中,四甲基苯醌以不络合的形式存在,电极上的还原过程是一个ECE过程;在酸性熔盐中,形成络合物TQ(AlCl_3)_m,络合数m为1,2,3,随熔盐酸度变化,此外,醌类物质芳香环上的取代基,也影响其电化学性质。吸电子基团使还原电位正移,推电子基团使还原电位负移。
The electrochemical behavior of tetramethylbenzoquinone in room temperature molten salt of n-butylpyridine-AlCl_3 is related to the pH value of molten salt at room temperature. In alkaline molten salt, tetramethylbenzoquinone exists in non-complex form , The reduction process on the electrode is an ECE process; in the acidic molten salt, the complex TQ (AlCl 3) _m is formed, the complex number m is 1, 2 and 3, with the change of the acidity of the molten salt, The substituents on the ring also affect their electrochemical properties. Electron-withdrawing groups move the reduction potential forward, pushing the electron groups to negatively shift the reduction potential.