From the laboratory to space: unveiling isomeric diversity of C<sub>5</sub>H<sub>2</sub> in the reaction of tricarbon (C<sub>3</sub>, X<sup>1</sup>Σ<sub>g</sub> <sup>+</sup>) with the vinyl radical (C<sub>2</sub>H<sub>3</sub>, X<sup>2</sup>A').
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ABSTRACT: By connecting laboratory dynamics with cosmic observables, this work highlights the critical role of reactions between highly reactive species in shaping the molecular inventory of the interstellar medium and opens new windows into the spectroscopically elusive corners of astrochemical complexity. The gas phase formation of distinct C5H2 isomers is explored through the bimolecular reaction of tricarbon (C3, X1Σ+ g) with the vinyl radical (C2H3, X2A') at a collision energy of 44 ± 1 kJ mol-1 employing the crossed molecular beam technique augmented by electronic structure and Rice-Ramsperger-Kassel-Marcus (RRKM) calculations. This barrierless and exoergic reaction follows indirect dy
SUBMITTER: Medvedkov IA
PROVIDER: S-EPMC12412251 | biostudies-literature | 2025 Sep
REPOSITORIES: biostudies-literature
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