The isomer distribution of C6H6 products from the propargyl radical gas-phase recombination investigated by threshold-photoelectron spectroscopy - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Communications Chemistry Année : 2024

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

Résumé

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 measurements of the branching ratios of the eight identified C6H6 isomers in the propargyl self reaction products (4 mbar, 298 K conditions), this study also highlights the advantages and disadvantages of using isomer-selective TPES to identify and quantify reaction products.

Domaines

Chimie
Fichier principal
Vignette du fichier
s42004-024-01239-7.pdf (1.25 Mo) Télécharger le fichier
42004_2024_1239_MOESM2_ESM.pdf (616.47 Ko) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04654491 , version 1 (19-07-2024)

Identifiants

Citer

Helgi Rafn Hrodmarsson, Gustavo A Garcia, Lyna Bourehil, Laurent Nahon, Bérenger Gans, et al.. The isomer distribution of C6H6 products from the propargyl radical gas-phase recombination investigated by threshold-photoelectron spectroscopy. Communications Chemistry, 2024, 7 (1), pp.156. ⟨10.1038/s42004-024-01239-7⟩. ⟨hal-04654491⟩
0 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More