Electrochemical Study of Some Substituted Chromene Derivatives inNonaqueous Media at Pt, Au and Glassy Carbon Electrodes

摘要

The redox characteristics of some substituted chromene derivatives has been investigated in different nonaqueoussolvents such as, 1,2- dichloroethane (DCE), dichloromethane (DCM) and acetonitrile (AN) using 0.1mol dm-3tetrabutylammonium perchlorate (TBAP) as a supporting electrolyte at platinum, gold and glassy carbon electrodes, usingcyclic voltammetry. Through controlled potential electrolysis (CPE), the product of oxidation and reduction can be separatedand identified. The product of oxidation was found to be the corresponding bis-compound. On the other hand, thereduction occurs in a single two electron process to give the dianion, which abstracts protons to saturate the (-C=O) bond.The effect of substituents on the redox mode of an electroactive site has also been studied.