Zobrazeno 1 - 10
of 752
pro vyhledávání: '"Claude Guillemin"'
Autor:
Helgi Rafn Hrodmarsson, Gustavo A. Garcia, Lyna Bourehil, Laurent Nahon, Bérenger Gans, Séverine Boyé-Péronne, Jean-Claude Guillemin, Jean-Christophe Loison
Publikováno v:
Communications Chemistry, Vol 7, Iss 1, Pp 1-10 (2024)
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 mole
Externí odkaz:
https://doaj.org/article/f737eacd97dd4bfcb555e42a04d00637
Autor:
Elena R. Alonso, Aran Insausti, Lucie Kolesniková, Iker León, Brett A. McGuire, Christopher N. Shingledecker, Marcelino Agúndez, José Cernicharo, Víctor M. Rivilla, Carlos Cabezas, Izaskun Jiménez-Serra, Jesús Martín-Pintado, Jean-Claude Guillemin
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 1, p 95 (2024)
This work aims to spectroscopically characterize and provide for the first time direct experimental frequencies of the ground vibrational state and two excited states of the simplest alkynyl thiocyanate (HCCSCN) for astrophysical use. Both microwave
Externí odkaz:
https://doaj.org/article/c7e317ffe694471781806171b6f2c7b4
Autor:
Helgi Rafn Hrodmarsson, Martin Schwell, Nicolas Fray, Jean-Claude Guillemin, Majdi Hochlaf, Emilie-Laure Zins
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 1, p 26 (2024)
The molecule 2-aminopropionitrile (2-APN; H _3 CCH(NH _2 )CN) is a chiral precursor of the amino acid alanine and could play an important role in the emergence of the homochirality of life. To date, 2-APN has not yet been detected in the interstellar
Externí odkaz:
https://doaj.org/article/b1f93ff23e8a489bbe76cfbaa8175b64
Publikováno v:
Molbank, Vol 2023, Iss 1, p M1599 (2023)
The kinetically unstable propargylisocyanide was reacted with the tetrakis(acetonitrile) copper(I) hexafluorophosphate and the formed complex was then involved in a copper-catalyzed alkyne-azide cycloaddition reaction (CuAAC). After the decomplexatio
Externí odkaz:
https://doaj.org/article/0540cbc9e9594594898f845fd8c7ddb9
Autor:
Lucie Kolesniková, Tereza Uhlíková, Jan Koucký, Kateřina Luková, Dominik Habiger, Patrik Kania, Jean-Claude Guillemin, Štěpán Urban
Publikováno v:
The Astrophysical Journal, Vol 944, Iss 1, p 10 (2023)
A high degree of isomerism in the realm of interstellar molecules stimulates systematic astronomical investigations of members of different families of isomers. Among them, vinyl-bearing compounds have kindled considerable interest due to recent dete
Externí odkaz:
https://doaj.org/article/62fb446ece2b48468595749354d21b45
Autor:
Vincent Richardson, Daniela Ascenzi, David Sundelin, Christian Alcaraz, Claire Romanzin, Roland Thissen, Jean-Claude Guillemin, Miroslav Polášek, Paolo Tosi, Jan Žabka, Wolf D. Geppert
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 8 (2021)
Experimental and theoretical studies are presented on the reactivity of the radical cation isomers H2CNH+• (methanimine) and HCNH2+• (aminomethylene) with ethyne (C2H2). Selective isomer generation is performed via dissociative photoionization of
Externí odkaz:
https://doaj.org/article/c6f0131e400d405fa96182b2e90ad145
Autor:
Ningjing Jiang, Mattia Melosso, Filippo Tamassia, Luca Bizzocchi, Luca Dore, Elisabetta Canè, Davide Fedele, Jean-Claude Guillemin, Cristina Puzzarini
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 8 (2021)
The perspectives opened by modern ground-based infrared facilities and the forthcoming James Webb Telescope mission have brought a great attention to the ro-vibrational spectra of simple interstellar molecules. In this view, and because of the lack o
Externí odkaz:
https://doaj.org/article/ef53b385b04d420fb81dbdb380f68604
Autor:
Luyao Zou, Jean-Claude Guillemin, Arnaud Belloche, Jes K Jørgensen, Laurent Margulès, Roman A Motiyenko, Peter Groner
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 2023, 520 (3), pp.4089-4102. ⟨10.1093/mnras/stad405⟩
Monthly Notices of the Royal Astronomical Society, 2023, 520 (3), pp.4089-4102. ⟨10.1093/mnras/stad405⟩
Up to date, only 6 imines have been detected in the interstellar medium. The 3-carbon imine, 2-propanimine ((CH$_3$)$_2$C=NH), is predicted to be the structural isomer with the lowest energy in the C$_3$H$_7$N group, and appears to be a good candidat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::880586250645ef31d729e61bef93eba1
https://doi.org/10.1093/mnras/stad405
https://doi.org/10.1093/mnras/stad405
Publikováno v:
Journal of Organic Chemistry
Journal of Organic Chemistry, 2023, ⟨10.1021/acs.joc.2c02493⟩
Journal of Organic Chemistry, 2023, ⟨10.1021/acs.joc.2c02493⟩
International audience; (Z)- and (E)-iminoacetonitriles (NCCH═NH), two hydrogen cyanide dimers, are described as key compounds in prebiotic chemistry. Among the many possible dimers of HCN with covalent bonds, even the second on the scale of thermo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a9e40fbb92176d838b328d0303fe691
https://doi.org/10.1021/acs.joc.2c02493
https://doi.org/10.1021/acs.joc.2c02493
Publikováno v:
Molecules, Vol 26, Iss 22, p 6870 (2021)
We report the observation and analysis of the rotational spectrum of a 1:1 cluster between 2-aminopyridine and water (AMW) carried out with supersonic expansion Fourier transform microwave spectroscopy at 4.7–16.5 GHz. Measurements of the 2-aminopy
Externí odkaz:
https://doaj.org/article/6c28d8483b90445d9a26ef90639fed2a