Pyrolysis of fulvenallene (C7H6) and fulvenallenyl (C7H5): Theoretical kinetics and experimental product detection

► Pyrolysis of fulvenallene and fulvenallenyl were studied theoretically and experimentally. ► Fulvenallene predominantly forms fulvenallenyl + H. ► Main pyrolysis products of fulvenallenyl predicted to be C3H3 + C4H2 and C5H3 isomers + C2H2. ► Spectrometry experiment detect products consistent with theory. ► Resonance stabilized radical fulvenallenyl is a relatively long-lived combustion intermediate.