## Abstract Functional group interaction occurs in the loss of a phenoxy radical from the molecular ions of ω‐phenylthio alkylphenylethers ØO(CH~2~)~__n__~SØ (__n__ = 2–6). Labelling data provide evidence for the S‐phenyl thietanium, S‐phenyl tetrahydrothiophenium and S‐phenyl tetrahydrothiopyraniu
Studies in organic mass spectrometry. XXII–Evidence for the existence of cyclic oxonium ions in the gas phase
✍ Scribed by C. C. Van De Sande
- Publisher
- John Wiley and Sons
- Year
- 1976
- Tongue
- English
- Weight
- 506 KB
- Volume
- 11
- Category
- Article
- ISSN
- 1076-5174
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
The first evidence for the existence of the methylphosphoazonium (methyliminophosphenium) ion CH3NP+ and the methylarsenoazonium ion (named in this work) CH3NAs+ (analogues of the methyldiazonium ion CH,NN+) is provided using electron impact mass spectrometry. The ions are formed as fragment ions of
Mass-spectral and n.m.r. analysis of thiophenes labeled by exchange with deuteriosulfuric acid establishes that exchange at the 2 and 5 positions is essentially complete before any deuterium is incorporated at positions 3 and 4. Thus, such exchange is a satisfactory procedure for positionspecific la
## Abstract The naturally occurring purine and pyrimidine heterocycles found in nucleic acids differ significantly in their basicity. To investigate whether such differences may provide useful mass spectrometric information about nucleic acid sequence and/or composition, the distribution of charge