RT info:eu-repo/semantics/article
T1 Some Insights into Formamide Formation through Gas-phase Reactions in the Interstellar Medium
A1 Redondo Cristóbal, María del Pilar
A1 Barrientos Benito, María Carmen
A1 Largo Cabrerizo, Antonio
K1 Astrobiología
K1 Moléculas
K1 Astroquímica
AB 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.
PB American Astronomical Society
SN 0004-637X
YR 2014
FD 2014
LK http://uvadoc.uva.es/handle/10324/22505
UL http://uvadoc.uva.es/handle/10324/22505
LA eng
NO The Astrophysical Journal, Volume 780, Issue 2, article id. 181, 7 p. (2014)
NO Producción Científica
DS UVaDOC
RD 19-abr-2024