The structures of some new carboxamide, thiocarboxamide, nicotinoyl and isonicotinoyl pyrazoline derivatives have been related to their mass spectral data. The ions produced under electron impact showed both the characteristic pyrazoline ion and unusual azete fragmentation patterns. These results su
Mass spectrometric study of hexamethyldisilazane and some of its N-substituted derivatives
✍ Scribed by J. Tamás; P. Miklós
- Publisher
- John Wiley and Sons
- Year
- 1975
- Tongue
- English
- Weight
- 393 KB
- Volume
- 10
- Category
- Article
- ISSN
- 1076-5174
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✦ Synopsis
Abstract
The electron‐impact‐induced decomposition of the title compounds has been investigated in detail. Deuterium labelling was used to study the mechanisms of fragmentation and the structures of ions generated. Hydrogen, methyl and phenyl group migrations to one of the silicon atoms were observed as significant secondary processes. These processes are usually γ‐transitions, from which it is inferred that these rearrangements occur via 4‐membered cyclic transition complexes.
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