Work

Production of Nitrogen Dioxide, NO2–, Anion from Dissociative Electron Attachment to Nitromethane below 1 eV and Its Temperature Dependence: Direct vs Dipole Bound Mediated Processes

Year: 2024

Type: article

Abstract: Reaction induced by slow electrons is implicated in a large field of research and applications. Below 3-4 eV, dissociative electron attachment efficiently fragments molecules via (1) shape resonance or (2) mediated by the formation of a dipole bound anion. While the temperature dependence of process 1 is well-known, that of 2 is not clearly established. Nitromethane is the prototypical molecule for which the electron attachment leads to the formation of both a dipole bound and a covalent anion. We provide here a comprehensive study of the fragmentation of nitromethane by <1 eV electron and the unusual temperature effects attributed principally to process 2.

Source: The Journal of Physical Chemistry Letters

DOI: 10.1021/acs.jpclett.4c02602

Authors: Hassan Abdoul-Carime, Guillaume Thiam, Franck Rabilloud