Experiments towards an analytical application of host-guest complexes of [60]fullerene and its derivatives

Attempts to gain access to an indirect mass spectrometric characterization of dimeric [60]fullerene derivatives such as C-119, C-120 and C120O have be en made. By exploring the ability of different hosts to form host-guest com plexes with [60]fullerene derivatives it was intended to obtain products wh ich could be analyzed by fast-atom bombardment (FAB) mass spectrometry. gam ma-Cyclodextrin (CD) and several calixarenes have been tried as potential h osts, but only CD was capable of forming the desired complexes in some case s. Besides the well-known complex [2CD + C-60], prepared for testing purpos es, me report, for the first time, the formation and FAB mass spectra of [2 CD + C60O] and [2CD + C60O2].