Bh. Chen et al., FACILE SULFATION OF C-60 USING P2O5 AS AN OXIDATION PROMOTER, Journal of the Chemical Society. Perkin transactions. I, (7), 1998, pp. 1171-1173
Reactivity of C-60 molecules toward the oxidative sulfation reaction i
nduced by H2SO4-SO3 is highly enhanced by P2O5, leading to hexacyclosu
lfated fullerene intermediates which are converted to dodecahydroxyful
lerenes upon hydrolysis.