Fig. 7: Potential energy diagram leading to pentabenzocorannulene.

Calculated potential energy diagram for the most important channels of the [C36H17]• plus vinylacetylene reaction. Relative energies of various species calculated at the DLPNO-CCSD(T)/cc-pVDZ level of theory are given in kJ mol−1 with respect to the initial reactants. A full version of the diagram and Cartesian coordinates are available in Supplementary Fig. 7 and Supplementary Data 2. Carbon atoms are gray and hydrogen atoms are white.