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Título
Some Insights into Formamide Formation through Gas-phase Reactions in the Interstellar Medium
Año del Documento
2014
Editorial
American Astronomical Society
Descripción
Producción Científica
Documento Fuente
The Astrophysical Journal, Volume 780, Issue 2, article id. 181, 7 p. (2014)
Résumé
We study the viability of different gas-phase ion–molecule reactions that could produce precursors of formamide in the interstellar medium. We analyze different reactions between cations containing a nitrogen atom (NH+3 , NH+4 , NH3OH+, and NH2OH+) and neutral molecules having one carbonyl group (H2CO and HCOOH). First, we report a theoretical estimation of the reaction enthalpies for the proposed processes. Second, for more favorable reactions, from a thermodynamic point of view, we perform a theoretical study of the potential energy surface. In particular, the more exothermic processes correspond to the reactions of ionized and protonated hydroxylamine with formaldehyde. In addition, a neutral–neutral reaction has also been considered. The analysis of the potential energy surfaces corresponding to these reactions shows that these processes present a net activation barrier and that they cannot be considered as a source of formamide in space.
Palabras Clave
Astrobiología
Moléculas
Astroquímica
ISSN
0004-637X
Revisión por pares
SI
Patrocinador
Junta de Castilla y León (programa de apoyo a proyectos de investigación – Ref. VA330U13)
Version del Editor
Propietario de los Derechos
© The American Astronomical Society
Idioma
eng
Derechos
openAccess
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