Abstract
The hexamethylethane radical cation (Me/sub 3/C.CMe/sub 3/)/sup +/ has been generated through positive charge transfer by ..gamma.. irradiation of both glassy and polycrystalline Freon solutions, its EPR spectrum consisting of seven lines with binomial intensities and having the parameters /sup 1/A(6) = 29.0 +- 0.2 G and g = 2.0031 +- 0.0003. In contrast, only neutral alkyl radicals are produced from the hydrocarbon by ..gamma.. irradiation of the hexamethylethane matrix, even when powerful electron scavengers are present. It is suggested that the formation of the radical cation by positive charge transfer in a Freon matrix is a more relaxed process than that of vertical ionization by electron impact in a hexamethylethane matrix.
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