Dariusz Pogocki1,2, Jarosław Sadlo2
1 Department of Pharmaceutical Chemistry, University of Kansas, 2095 Constant Avenue, Lawrence, KS 66047, USA,
2 Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland
Radicals formed by g-radiolysis of thiaproline (thiazolidine-4-carboxylic acid) amino acid and its derivatives in a frozen acidic aqueous solution at 77 K and by subsequent warming from 95 to 200 K have been studied by electron spin resonance (ESR). The experimental parameters of radical spectra were compared with those obtained by quantum-mechanical calculations on AM1 and PM3 semiempirical levels.