Ion-molecule reactions involving methyl isocyanide and methyl cyanide |
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Authors: | Dechamps Noémie Flammang Robert Boulvin Michaël Lamote Luc Gerbaux Pascal Ngan Vu Thi Nguyen Minh Tho |
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Institution: | University of Mons-Hainaut, Avenue Maistriau 19, B-7000 Mons, Belgium. |
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Abstract: | Ion-molecule reactions involving methyl isocyanide and methyl cyanide have been performed in a new rf-only hexapole collision cell inserted in a large-scale tandem mass spectrometer. Beside protonation processes, N-methyl cyanogen ions (CH(3)N(+)CCN) and 1-methyleneiminium-1- ethylenium ions (CH(2)CN(+)CH(2)) have been produced in high yield and fully characterized by high-energy collisional activation. The unimolecular chemistry of the molecular ions of caffeine (1,3,7-trimethyl xanthine) has been revisited on the basis of these new results. |
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