Negative ion formation by low energy electron attachment to gas-phase 5-nitrouracil

Ptasińska, Sylwia; Alizadeh, Elahe; Sulzer, Philipp; Abouaf, Robert; Mason, Nigel J.; Märk, Tilmann D. and Scheier, Paul (2008). Negative ion formation by low energy electron attachment to gas-phase 5-nitrouracil. International Journal of Mass Spectrometry, 277(1-3) pp. 291–295.

DOI: https://doi.org/10.1016/j.ijms.2008.06.008

Abstract

Dissociative electron attachment (DEA) to gas phase 5-nitrouracil (5NU) is studied using a double focusing sector field mass spectrometer and a hemispherical electron monochromator (HEM) combined with a quadrupole mass spectrometer (QMS). Besides the formation of the long-lived parent anion 5NU−, low energy electron impact (<20 eV) leads to a number of anionic fragments. The ion yield for all observed negative ions has been recorded as a function of the incident electron energy. The most dominant negative ion observed was (5NU–NO2)−, which is produced directly in the ion source and also weakly as a product of a metastable decay of 5NU−. These experiments were supported by quantum chemical calculations based on the density functional theory to calculate the electrostatic potential and molecular orbitals.

Viewing alternatives

Metrics

Item Actions

Export

You can export this page using these formats Digital Object Identifier - DOI