Nature of the radical formed during electrolytic reduction of 4-(2′-thienyl)quinazoline in dimethylformamide

✍ Scribed by T. Priyamvada Devi; M.S. Gopinathan; C.S. Venkatachalam

• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 354 KB
• Volume: 25
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(80)87115-5

✦ Synopsis

EPR studies and HMO calculations are carried out in order to understand the nature of the eIectrolytically generated radical of 4(2'-thienyl)quinazoline (4-TQ) in dimethylformamide (DMF). Single broad EPR signal obtained is explained on the basis of theoretical hyperfine splitting constants. BY correlating the experimental half-wave potentials and the colour of the radical with HMO energies, it is concluded that 4-TQ protonated at Nl-position is getting reduced to give the neutral radical.