The photolysis of C60Cl6 in the presence of alpha-phenyl-N-tert-burylnitron
(PBN) as a spin trap was studied by ESR spectroscopy, it was shown that a
C-Cl bond undergoes homolytic cleavage to give a stable fullerenyl radical
of the cyclopentadienyl type, whose formation was confirmed by quantum-chem
ical computations.