3d image of corannulene skeletal formula

corannulene circulene polycyclic aromatic hydrocarbon cyclopentane ring geodesic polyarene buckminsterfullerene buckybowl inversion barrier chemical yields flash vacuum pyrolysis nucleophilic displacement–elimination reaction aromaticity annulenyl reduction one-electron reductions nmr spectroscopy oxidation electrophiles bicorannulenyl buckycatcher substance matter material compound component agent stuff reagent functional group precursor synthesis production building block molecule molecular formula skeletal structural structure 3d chemistry science scientific research organic chemical