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Monthly Notices of the Royal Astronomical Society, volume 506, issue 3, pages 3499-3510

C2H2···CO complex and its radiation-induced transformations: A building block for cold synthetic astrochemistry

Publication typeJournal Article
Publication date2021-07-02
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor4.8
ISSN00358711, 13652966
Space and Planetary Science
Astronomy and Astrophysics
Abstract
ABSTRACT

In this work, we have examined the radiation-induced synthetic chemistry occurring in an astrochemically important C2H2–CO system at the molecular level using a matrix isolation approach. The 1:1 C2H2···CO intermolecular complex of linear structure was obtained in the solid low-temperature (5 K) noble gas matrices by deposition of the C2H2/CO/Ng (Ng = Ar, Kr, Xe) gaseous mixtures and characterized by Fourier-transform infrared spectroscopy. It was found that the X-ray radiolysis of the C2H2···CO complex resulted in formation of C3O (tricarbon monoxide), HCCCHO (propynal), c-H2C3O (cyclopropenone), H2CCCO (propadienone), and HC3O (oxoprorynyl radical). This means that the studied complex may be considered as the simplest building block (or minimal size of intermolecular reactor) for cold astrochemistry occurring in mixed interstellar ices. Remarkably, the discovered transformations of the complex actually represent synthetic routes leading to various C3 species, whereas the acetylenic C–H bond cleavage yielding ethynyl radical appears to be a minor process. Prolonged irradiation results in dehydrogenation, while the C3 skeleton is retained. The interpretation of the C2H2···CO radiolysis mechanism (possible reactions pathways) is provided based on the analysis of kinetic curves and matrix effect. Astrochemical implications of the results are discussed.

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Zasimov P. V. et al. C2H2···CO complex and its radiation-induced transformations: A building block for cold synthetic astrochemistry // Monthly Notices of the Royal Astronomical Society. 2021. Vol. 506. No. 3. pp. 3499-3510.
GOST all authors (up to 50) Copy
Zasimov P. V., Ryazantsev S. V., Tyurin D. A., Feldman V. I. C2H2···CO complex and its radiation-induced transformations: A building block for cold synthetic astrochemistry // Monthly Notices of the Royal Astronomical Society. 2021. Vol. 506. No. 3. pp. 3499-3510.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1093/mnras/stab1820
UR - https://doi.org/10.1093%2Fmnras%2Fstab1820
TI - C2H2···CO complex and its radiation-induced transformations: A building block for cold synthetic astrochemistry
T2 - Monthly Notices of the Royal Astronomical Society
AU - Ryazantsev, Sergey V
AU - Feldman, Vladimir I.
AU - Zasimov, Pavel V
AU - Tyurin, Daniil A
PY - 2021
DA - 2021/07/02 00:00:00
PB - Oxford University Press
SP - 3499-3510
IS - 3
VL - 506
SN - 0035-8711
SN - 1365-2966
ER -
BibTex |
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BibTex Copy
@article{2021_Zasimov,
author = {Sergey V Ryazantsev and Vladimir I. Feldman and Pavel V Zasimov and Daniil A Tyurin},
title = {C2H2···CO complex and its radiation-induced transformations: A building block for cold synthetic astrochemistry},
journal = {Monthly Notices of the Royal Astronomical Society},
year = {2021},
volume = {506},
publisher = {Oxford University Press},
month = {jul},
url = {https://doi.org/10.1093%2Fmnras%2Fstab1820},
number = {3},
pages = {3499--3510},
doi = {10.1093/mnras/stab1820}
}
MLA
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MLA Copy
Zasimov, Pavel V., et al. “C2H2···CO complex and its radiation-induced transformations: A building block for cold synthetic astrochemistry.” Monthly Notices of the Royal Astronomical Society, vol. 506, no. 3, Jul. 2021, pp. 3499-3510. https://doi.org/10.1093%2Fmnras%2Fstab1820.
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