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The involvement of neutral species in the NO − → O + charge inversion reaction
Author(s) -
Kingston R. G.,
Brenton A. G.,
Guilhaus M.,
Bey J. H.
Publication year - 1986
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210211015
Subject(s) - ion , chemistry , atomic physics , collision , inversion (geology) , translational energy , molecular physics , analytical chemistry (journal) , physics , geology , paleontology , computer security , organic chemistry , structural basin , computer science , chromatography
Intermediates in the overall charge inversion reaction NO − → O + ˙ (la), have been found to be O and NO˙ neutrals, and NO + ions. The intermediates involved have been characterized by various mass spectrometric techniques; for example, inducing the steps of the reaction in separate field‐free regions allows the peaks for the consecutive reactions NO − → NO + → O + ˙ (II) to be recorded free from interference. However, to observe the involvement of a neutral intermediate, techniques such as floating the collision cell and applying a voltage to a deflector plate in front of the collision cell have been employed. Utilizing these methods allows a peak to be obtained due to one or both of the processes, NO − → NO˙ → O + ˙ (IIIa) and NO − → O + ˙ (IIIb), which cannot be separated. It is shown that the peak for the overall reaction NO − → O + ˙ can be modelled and reconstructed by addition of peaks, in a ratio of 1:3, produced by reactions II and III. This provides a reasonable account of the peak shape, in particular, of the tails of the peak which correspond to fragmentations involving large translational energy releases of up to 10 eV.