The homolysis of C–H bonds in carbocations
Abstract
The e.s.r. spectra of certain tetra-alkylcyclobutadiene radical cations, of the hexamethylcyclopentadience radical cation, and of various polycyclic aromatic radical cations, RH˙+, are observed when the corresponding hydrocarbon cations, RH2+, are photolysed in trifluoroacetic acid solvent.