Fullerene fragments and other fullerene model compounds not only mimic certain aspects of the carbon spheres, but they are also fascinating compounds in their own right. Novel annelated polycyclic arenes such as 1 have been synthesized, whose anions could potentially form endo- and exohedral complexes with metal cations. Recently the hydrocarbon cage compound 2 (C60H60) was found to complex Ag+ ions selectively.
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