2026-04-27T20:23:29Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/225052021-06-23T11:52:22Zcom_10324_1186com_10324_931com_10324_894col_10324_1404

Redondo Cristóbal, María del Pilar Barrientos Benito, María Carmen Largo Cabrerizo, Antonio 2014 Producción Científica 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. application/pdf http://uvadoc.uva.es/handle/10324/22505 eng American Astronomical Society Some Insights into Formamide Formation through Gas-phase Reactions in the Interstellar Medium info:eu-repo/semantics/article TEXT UVaDOC. Repositorio Documental de la Universidad de Valladolid Hispana