Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/230934
COMPARTIR / EXPORTAR:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE

Invitar a revisión por pares abierta
Título

Rotational spectroscopic study of S-methyl thioformate: A global laboratory analysis of ground and excited torsional states up to 660 GHz

AutorJabri, A.; Tercero, B.; Margulès, L.; Motiyenko, R. A.; Alekseev, E.A.; Kleiner, I.; Cernicharo, José CSIC ORCID ; Guillemin, Jean-Claude
Palabras claveLine: identification
Catalogues
ISM: abundances
Submillimeter: ISM
Methods: laboratory: molecular
Fecha de publicación7-dic-2020
EditorSpringer Nature
CitaciónAstronomy and Astrophysics 644: A102 (2020)
ResumenContext. S-methyl thioformate CH3SC(O)H is a monosulfur derivative of methyl formate, a relatively abundant component of the interstellar medium (ISM). S-methyl thioformate being, thermodynamically, the most stable isomer, it can be reasonably proposed for detection in the ISM. Aims. This work aims to experimentally study and theoretically analyze the ground and first torsional excited states for CH3SC(O)H in a large spectral range for astrophysical use. Methods. S-methyl thioformate was synthesized as a result of a reaction of methyl mercaptan with acetic-formic anhydride. The millimeter-wave spectrum was then recorded for the first time from 150 to 660 GHz with the solid-state spectrometer located at Lille. Results. A set of 3545 lines is determined and combined with 54 previously measured lines in the microwave region, belonging to ground state νt = 0 as well as 1391 transitions in the first excited state of torsion ν18 = 1. Some 164 lines were also assigned to ν18 = 2 for the A-species. A global fit was performed using the BELGI-Cs code taking into account the large splitting of A and E lines due to methyl internal rotation motion with a relatively low barrier, V3 = 127.4846(15) cm-1. Conclusions. Using our spectroscopy work, a deep search of S-methyl thioformate was carried out in the IRAM 30 m and ALMA data of different high-mass star-forming regions (Orion KL and Sgr B2). We derived an upper limit to the CH3SC(O)H column density in these regions.
Descripción9 pags., 3 figs., 6 tabs.
Versión del editorhttp://dx.doi.org/10.1051/0004-6361/202038200
URIhttp://hdl.handle.net/10261/230934
DOI10.1051/0004-6361/202038200
Identificadoresdoi: 10.1051/0004-6361/202038200
issn: 1432-0746
Aparece en las colecciones: (CFMAC-IFF) Artículos




Ficheros en este ítem:
Fichero Descripción Tamaño Formato
Rotational spectroscopic study.pdf2,8 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo

CORE Recommender

PubMed Central
Citations

1
checked on 06-mar-2024

SCOPUSTM   
Citations

3
checked on 11-mar-2024

WEB OF SCIENCETM
Citations

3
checked on 26-feb-2024

Page view(s)

79
checked on 18-mar-2024

Download(s)

40
checked on 18-mar-2024

Google ScholarTM

Check

Altmetric

Altmetric


Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.