## Abstract Thresholds for the appearance of fragment ions allowed the estimation of threshold fragmentation energies (TFE) for the collisionally activated dissociation (CAD) in the gas phase of laserβdesorbed pyridineβring substituted __N__βbenzylpyridinium cations to form pyridine and a carbocati
Reaction dynamics of collisionally activated ammonia cations
β Scribed by Bernard Leyh; Antuan Hoxha
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 922 KB
- Volume
- 179
- Category
- Article
- ISSN
- 0301-0104
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π SIMILAR VOLUMES
Three novel collisionally induced dissociation pathways, additional to the usual formation of pyridine or pyridinium cation, are described for laser-desorbed N-substituted pyridinium cations. Particularly prevalent is the formation of an ion of m/z 94, corresponding to [PyCH,]'. Doubly charged pyrid
The collisional activation spectra of lithiated and bariated cations and deprotonated anions of the triterpenoic acids hederagenin and oleanoic acid and their acetyl derivatives were examined. On collisional activation these precursors undergo similar charge-remote fragmentations including ring clea