Reaction of cyclohexanone with [NH4]+ under chemical ionization conditions. 1—formation of protonated unsubstituted imines
- 1 January 1981
- journal article
- research article
- Published by Wiley in Journal of Mass Spectrometry
- Vol. 16 (1) , 45-47
- https://doi.org/10.1002/oms.1210160112
Abstract
High resolution and metastable decomposition spectra of the ions [M + NH4]+ (and [M + ND4]+) formed by reaction of [NH4]+ (and [ND4]+) with cyclohexanone have been measured. The results provide evidence that the m/z 98 ion, which is abundant in the chemical ionization (NH3) spectrum of cyclohexanone, is in fact composed of two isobaric ions: a protonated imine ion and the molecular ion of cyclohexanone. The former is formed by a mechanism analogous to that occurring in solution.Keywords
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