Electron spin resonance trapping technique with phenyl t-butyl nitrone (PBN)have been used to study the process of electroreduction of p-toluene sulfonamide at mercury electrode. The results showed that the reaction is a free radical one. p-toluene/benzyl radicals formed yia a stage of detaching sulfonamide group have been identified by the hyperfine spectrum of the radical adducts.
We have reported the synthesis of compounds mentioned in this paper and the characterization of their structure and properties withspectra7]. In this Work, we made a quantum chemistry calculation of Cu(En)2DDQ2, Cu(Phen)2DDQ2 and three analogous compoundsof Zn2+ coordinated with Phen, Bipy, and En ligands in octahedral model; discussed the feature of their chemical bonds. The resultObtained shows that DDQ radical anion is a considerable electron acceptor. It also would be helpful to understand the characteristics ofIR, ESR spectra of bile compounds and their conductivity discovered in solid state or solution.
