Spectral characteristics of the radical cations (RC) of DMF (~max = 415 nm, em~ x = (2.6+0.8)" 103 L mol -I cm -1) stabilized in an irradiated glassy freon mixture (CFC13 and CF2BrCF2Br) at 77 K were determined. Amide type radicals and RC of the matrix were shown to be formed by irradiation (~. = 365--436 nm) of the radical cations of DMF in freon matrices using ESR and UV spectroscopy. The quantum yields of photoconversion of the DMF radical cations are independent of the wavelength of exciting light. It was found that the matrix structure affects the processes stabilizing the products of photoconversion of the DMF radical cations.Radical cations (RC) are active intermediates formed in various radiochemi.cal, photochemical, catalytic, etc.
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