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Spherical aromaticity · NICS · 2(N+1)2 rule ·
Fullerenes · Hydrogen clusters
Abstract:
Maximum spherical aromaticity occurs in icosahedral fullerenes when the valence π-shells are completely filled with 2(N+1)2 electrons. Ab initio calculations
of nucleus-independent chemical shifts show that this rule can also be applied to less symmetrical small fullerenes and hydrogen clusters.