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Distributions of the samples of C60 isomers based on specific order parameters. Left: twodimensional distribution as a function of the sp2 hybridization fraction and asphericity parameter β. The boxes classify the four structural families, cage, planar polycyclic aromatic (PPA), pretzel, and branched. Right: one-dimensional distributions as a function of isomer energy (top), number of 6-member cycles (medium), and gyration radius (bottom). Reproduced from [232].
