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  • 11
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 14 (1979), S. 369-378 
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The mass spectra of several 4-amino-1,2,4-triazole-5-ones with different groups in position 1 have been recorded and show new skeletal rearrangements and hydrogen migrations. The comparison of the ‘normal’ and mass analysed ion kinetic energy spectra obtained by the ‘simili MIKE’ technique permits the determination of the molecular ion and fragment ion structures and also the mechanism of formation of these ions. These results show that the molecular ion of the N-1 unsubstituted 4-amino-1,2,4-triazole-5-ones exists in the gas phase in two tautomeric forms.
    Notes: Les spectres de masse d'un certain nombre d'amino-4 triazole-1,2,4 ones-5 différemment substituées en position 1 sont rapportés; ils mettent en évidence de nouveaux réarrangements et des migrations d'hydrogène. La comparaison des spectres normaux et des spectres d'énergie cinétique obtenus selon la technique simili MIKE a permis de déterminerla structure des ions moléculaires et des ions fragments et de décrirela formation de ces derniers. Ces résultats montrent que ľion moléculaire des amino-4 triazolones-5 non substituées en position 1 existe probablement en phase gazeuse sous deux formes tautomères (N-1-H et OH).
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
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