Analysis of the EPR results for graphite and fullerenes has led to the
development of a model for the g-factor in fullerene based on the ana
logy between graphite and fullerene, Pressure dependence of g-factor i
n C-60 powder confirms the validity of this model, C-13 hyperfine spli
tting of 0.36 mT in pristine fullerene is also reported. The g-factors
of C-60(-1) and C-60(-3) in a solution and in a different KxC60 fulle
rides are presented. C-60(+n) states should be described by the spectr
oscopic splitting factor larger than that of a free spin.