Radiation-induced transformations of isolated CH3CN molecules in noble gas matrices
Publication type: Journal Article
Publication date: 2017-12-01
scimago Q2
wos Q1
SJR: 0.543
CiteScore: 5.6
Impact factor: 3.3
ISSN: 0969806X, 18790895
Radiation
Abstract
Abstract The transformations of isolated CH 3 CN molecules in various solid noble-gas matrices (Ne, Ar, Kr, and Xe) under the action of X-ray irradiation at 5 K were investigated by FTIR spectroscopy. The main products are CH 3 NC, CH 2 CNH and CH 2 NCH molecular isomers as well as CH 2 CN and CH 2 NC radicals. The matrix has a strong effect on the distribution of reaction channels. In particular, the highest relative yield of keteneimine (CH 2 CNH) was found in Ne matrix, whereas the formation of CH 3 NC predominates in xenon. It was explained by differences in the matrix ionization energy (IE) resulting in different distributions of hot ionic reactions. The reactions of neutral excited states are mainly involved in Xe matrix with low IE, while the isomerization of the primary acetonitrile positive ions may be quite effective in Ne and Ar. Annealing of the irradiated samples results in mobilization of trapped hydrogen atoms followed by their reactions with radicals to yield parent molecule and its isomers. The scheme of the radiation-induced processes and its implications for the acetonitrile chemistry in cosmic ices are discussed.
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Kameneva S. V., Volosatova A. D., Feldman V. I. Radiation-induced transformations of isolated CH3CN molecules in noble gas matrices // Radiation Physics and Chemistry. 2017. Vol. 141. pp. 363-368.
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Kameneva S. V., Volosatova A. D., Feldman V. I. Radiation-induced transformations of isolated CH3CN molecules in noble gas matrices // Radiation Physics and Chemistry. 2017. Vol. 141. pp. 363-368.
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TY - JOUR
DO - 10.1016/j.radphyschem.2017.08.011
UR - https://linkinghub.elsevier.com/retrieve/pii/S0969806X1730693X
TI - Radiation-induced transformations of isolated CH3CN molecules in noble gas matrices
T2 - Radiation Physics and Chemistry
AU - Kameneva, Svetlana V
AU - Volosatova, Anastasia D
AU - Feldman, Vladimir I.
PY - 2017
DA - 2017/12/01
PB - Elsevier
SP - 363-368
VL - 141
SN - 0969-806X
SN - 1879-0895
ER -
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@article{2017_Kameneva,
author = {Svetlana V Kameneva and Anastasia D Volosatova and Vladimir I. Feldman},
title = {Radiation-induced transformations of isolated CH3CN molecules in noble gas matrices},
journal = {Radiation Physics and Chemistry},
year = {2017},
volume = {141},
publisher = {Elsevier},
month = {dec},
url = {https://linkinghub.elsevier.com/retrieve/pii/S0969806X1730693X},
pages = {363--368},
doi = {10.1016/j.radphyschem.2017.08.011}
}
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