C30H126-:: Self-aggregation, high charge density, and pyramidalization in a supramolecular structure of a supercharged hemifullerene

(Figure Presented) Charging hemifullerene C30H12 with potassium metal gives the hexaanion C30H12 6-(16-). The NMR data, which indicate high symmetry, high charge density, and pyramidalization of the C-4 positions, as well as DFTcalculations, are consistent with a tetramer [16-]4/24 K+, in which six K+ ions bridge four hexaanions (see picture; red K+, yellow H, blue C; the remaining 18 solvent-separated K+ ions are not shown). © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.