C60fullerene was converted with IBr as well as ICl. Two methods of preparation were used: Either the molten interhalogen compound was mixed up with C60, or C60was exposed to the vapour phase of the interhalogen compounds. After removing excess IBr or ICl respectively by gentle warming, the reaction products were ascertained to have the compositions C60(IBr)2.6and C60(ICl)3.2X-ray diffraction and Raman spectroscopy proved these compounds to be intercalation compounds. However besides intercalation, part of the C60balls were found to undergo halogenization or dimerization. EPR spectra show two singlet lines corresponding to the C60+radical cation and a paramagnetic partially negatively charged interhalogen species. The C60+signal is comparatively broad, indicating a strong coupling between paramagnetic centers.