Transient EPR spectroscopy has been applied to measure the spectraof excited triplet states in two seriesof fullerene bisadducts. Eight different bisadducts ofC60 with bis(ethoxycarbonyl)methylene and fivebis-N-methylpyrrolidines have been analyzed. The D and E parameters ofelectron dipolar interaction and the populationsof the zero field triplet sublevels, accounting for spin polarization,have been determined by spectrum simulation.They appear peculiar for each bisadduct. It is shown thattriplet EPR technique represents a useful spectroscopictool that allows structural assignments to bisadducts ofC60.
