L. Eberson et al., THE RADICAL-CATION FROM HEXAMETHYL(DEWAR BENZENE) - DERIVED FROM A SUBSTITUTION PRODUCT OF HEXAMETHYLBENZENE, Journal of the Chemical Society, Chemical Communications, (2), 1995, pp. 219-220
Photolysis of thallium(III) trifluoroacetate and pentamethylbenzyl ace
tate or pentamethylbenzyl alcohol in neat trifluoroacetic acid at -11
degrees C produces a well-resolved 13 x 8-line EPR spectrum of what pr
obably originates from pentamethylbenzyl trifluoroacetate radical cati
on; the same spectrum could be generated by similar treatment of hexam
ethyl(Dewar benzene).