Reactions of fullerenes with difluorine

The composition of fluorofullerenes synthesized in a reaction of fullerenes C-60 and C-70 With difluorine is controled by the temperature, the mode of fluorine admission into the reactor, and fluorination duration. The maximu m number of fluorine atoms attached to a C-60 or C-70 molecule is 48 or 56, which corresponds to the 80% occupancy of the reaction sites. The temperat ure range of 315-350 degrees C and dynamic fluorine admission are optimal f or synthesizing C60F48 Fluorinating C-70 under analogous conditions produce s a mixture of products.