Studies on Synthesis of Thienyl and Furyl Tetrathiafulvalenes

Abstract

Abstract: Amethod is proposed to synthesize thienyl and furyl tetrathiafulvalenes (TTF).Three new thienyl-TTF (Ⅶ a-c) and two furyl-TTF (Ⅶ d1-d2) were prepared by the method.The electrochemical property of the five TTFderlvatives prepared was studiedo by cyclic voltammetry.It was found that the value of E_1/2 decreased when the electron-donating group was in the thienyl ring of thienyl-TTF, the value of E_1/2 increased when electron-attracting groups was in the thienyl ring of thienyl-TTF.No peak appeared on the figure of cyclic valtammetry for furyl-TTF.The potential of reduction was higher than that of oxidation, the electrlc current of the highest peak increased by 50 times than the second peak in the figure of square wave voltarnmogram.The reason why thienyl-TTFderivatives only gave trans-isomers and furyl-TTFgave cis and trans-isomers was discussed.Charge-transfer complex of Ⅶb with TCNQ (1: 1) was also prepared.

Key words: Thienyltetrathiafulvalene, Furyltetrathiafulvalene, Cyclic voltammogram, Charge-transfer complex

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WANG Jian-Hua, KU Er-Ban, SHI Zhen, WANG Xiao-Gang. Studies on Synthesis of Thienyl and Furyl Tetrathiafulvalenes[J]. Chem. J. Chinese Universities, 1997, 18(3): 399.

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Studies on Synthesis of Thienyl and Furyl Tetrathiafulvalenes

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