Comparison of collision- versus electron-induced dissociation of sodium chloride cluster cations

Abstract

The collision-induced dissociation (CID) and electron-induced dissociation (EID) spectra of the [(NaCl)m(Na)n]n+ clusters of sodium chloride have been examined in a hybrid linear ion trap Fourier transform ion cyclotron resonance mass spectrometer. For singly charged cluster ions (n=1), mass spectra for CID and EID of the precursor exhibit clear differences, which become more pronounced for the larger cluster ions. Whereas CID yields fewer product ions, EID produces all possible [(NaCl) xNa]+ product ions. In the case of doubly charged cluster ions, EID again leads to a larger variety of product ions. In addition, doubly charged product ions have been observed due to loss of neutral NaCl uni..