POLAROGRAPHIC BEHAVIOUR OF SOME ARYLAZOTHEOPHYLLINES

Article abstract of DOI:10.1135/cccc19931978

The polarographic behaviour of a series of arylazotheophyllines was studied in aqueous alcoholic buffered media and in a DMF-0.1 m LiClO4 solution.The redox study gave evidence that the azo group is electroactive in aqueous as well as non-aqueous media.A mechanism interpreting the electrode process is proposed and confirmed through the identification of the controlled potential electrolysis products, the use of a model compound and the application of Hammett's ?-E relationship.The physico-chemical characteristics of these compounds, viz. the diffusion coefficient, dissociation constant, ionization potential and electron affinity, are also included.