A new organoboron-based arylation and alkenylation of C-60 catalyzed by a rhodium complex was developed. A treatment of C-60 with an organoboron compound in the presence of a catalytic amount of [Rh(cod)(CH3CN)(2)]BF4 in H2O/1,2-Cl2C6H4 furnished a functionalized fullerene (R-C-60-H) with good to excellent selectivity. Aryl, heteroaryl, and alkenyl groups can be installed by the reactions using the corresponding boronic acids, pinacol esters, and potassium trifluoroborates.