(Figure Presented) Crossing the bridge: Two isomeric iminofullerenes, [5,6]-open azafulleroid 1 and [6,6]-closed aziridinofullerene 2, were prepared by cycloaddition C60. These "azalogues" enable the study of the effects of the bridging atom in a fullerene cage, that is, C60-like (5,6-open) versus PCBM-like of their π systems (PCBM=[6,6]-phenyl-C 61-butyric acid methyl ester).