Claim: Dicoronylene is a by-product of hydrocracking (the process of breaking  complex organic molecules into simpler ones) formed when two molecules.
Evidence: Dicoronylene was later discovered to occur as a by-product of the catalytic hydrocracking used in petroleum processing. In petrochemistry, petroleum geology and organic chemistry, cracking is the process whereby complex organic molecules such as kerogens or long-chain hydrocarbons are broken down into simpler molecules such as light hydrocarbons, by the breaking of carbon-carbon bonds in the precursors. It is formed when two coronene molecules fuse.