Assigning structures to isomeric [C5H10]+ ions: The generation of ionized ethylcyclopropane from pentan-1-ol and 1-chloropentane
✍ Scribed by D. Harnish; J. L. Holmes; F. P. Lossing; A. A. Mommers; A. Maccoll; M. N. Mruzek
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 497 KB
- Volume
- 25
- Category
- Article
- ISSN
- 1076-5174
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✦ Synopsis
Abstract
The charge‐stripping mass spectra of the ten C~5~H~10~ isomers and of cyclopropane and propene have been re‐evaluated. Oxygen is the preferred collision gas for the former group and helium for the latter pair. A con bined study of the low‐energy mass spectra, charge‐stripping mass spectra and appearance energy measurements had to the conclusion that loss of H~2~O from ionized pentan‐1‐ol and loss of HCl from ionized 1‐chloropentane both predominantly produce ionized ethylcyclopropane as the fragment ion. For the alcohol, a 1,4‐elimination followed by an energetically favoured 1,2‐H shift is involved, whereas for the halide a direct 1,3‐elimination obtains.