Pyracylene Rearrangement Classes of Fullerene Isomers

Abstract Isomers of C n , n ⩽ 70, were generated and classified according to their interconvertibility by the pyracylene rearrangement. The algorithm used for generation of fullerene isomers represents an improvement of the spiral ring algorithm. Class cardinalities and the resonance energies of the most stable representatives are tabulated.

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