The formation of fluoroalkyl radicals in liquid chlorofluorocarbons (CF2Cl-CFCl2, CFCl3, CFCl2-CH3, CHF2-CF2-CF2Cl,CF3-CFH-CF3 and CCl4) has been investigated by means of the spintrapping technique and ESR spectroscopy. It is shown that the primary fluoroalkyl radicals which were generated in these compounds by ionising radiation are preferably formed by bond cleavage at carbon atoms attached to one
This paper reports the spin trapping of radicals in liquid CCl4 irradiated with low-energy X-rays of different wavelengths, using phenyl-t-butylnitrone (PBN) as a spin trap. The unstable PBN-Cl adduct and the relatively stable PBN-CCl3 adduct have been detected. X-rays of energy above the K-edge for chlorine produce significantly more trapped radicals than those having energies below this K-edge value