10.1002/jhet.5570110519
The research aimed to investigate the redox behavior of various heterocyclic compounds, specifically 2,1,3-benzothiadiazoles, benzofurazans, 2,1,3-benzoselenadiazoles, and 3,4-disubstituted and fused 1,2,5-thiadiazoles, in acetonitrile solutions using mercury and platinum electrodes. The study focused on derivatives containing alkyl, phenyl, bromo, chloro, cyano, nitro, methylsulfonyl, and trifluoromethylsulfonyl groups. The findings indicated that all ring systems and their derivatives were reversibly reduced initially in a one-electron step to their respective radical anions, with the exception of nitro and bromo derivatives, which were reduced preferentially at the substituent group. The research concluded that the potential at which the production of the radical anion occurred became more anodic as the electron-withdrawing ability of the substituent and the number of substituents increased, providing insights into the redox behavior of these compounds and their potential applications in artificial media as electron-transfer agents for ATP synthesis.
