1997•Journal of Mass SpectrometryRequires access

Study of C22X- Organic Salts by Simultaneous Use of Fast Atom Bombardment Mass Spectrometry and Tandem Mass Spectrometry. Chemical Reactivity in the Gaseous Phase

Michèle Calas, Gérard Cordina, Isabelle Gilles, Jean‐Louis Aubagnac

Abstract

The observed fragmentations in collisionally activated dissociation (CAD) spectra of CX+ adduct ions formed in the fast atom bombardment (FAB) mass spectra of C2+2X- bisammonium salts are the same as those previously put forward to account for the FAB mass spectra of these compounds. Thus, substitution and elimination reactions occur in the gaseous phase between X- anions and C2+ cations, this being a new example of chemical reactivity in the gaseous phase in mass spectrometry. Furthermore, it was established that charge-remote fragmentations of these C2+2X- salts observed by mass spectrometry provide ions which allow aliphatic chain identification. These ions are as abundant in the FAB mass spectra as in the CAD spectra. © 1997 by John Wiley & Sons, Ltd.

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Key concepts: Chemistry, Fast atom bombardment, Mass spectrometry, Mass spectrum, Tandem mass spectrometry, Reactivity (psychology), Dissociation (chemistry), Adduct