The isomer distribution of C₆H₆ products from the propargyl radical gas-phase recombination investigated by threshold-photoelectron spectroscopy.

ABSTRACT: The resonance-stabilization of the propargyl radical (C₃H₃) makes it among the most important reactive intermediates in extreme environments and grants it a long enough lifetime to recombine in both terrestrial combustion media and cold molecular clouds in space. This makes the propargyl self-reaction a pivotal step in the formation of benzene, the first aromatic ring, to eventually lead to polycyclic aromatic hydrocarbons in a variety of environments. In this work, by producing propargyl radicals in a flow tube where propyne reacted with F atoms and probing the reaction products by mass-selected threshold-photoelectron spectroscopy (TPES), we identified eight C₆H₆ products in total, including benzene. On top of providing the first comprehensive

SUBMITTER: Hrodmarsson HR 

PROVIDER: S-EPMC11245511 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature