Electrospray ionization (ESI) mass spectra were recorded for a range of substituted isoindoline nitroxides, two isoindoline nitroxide dimers and two piperidinyl nitroxides. In all cases the dominant molecular species arise from oxidation rather than protonation, an unusual process in ESI. Fragment i
Electrospray mass spectrometry of stable iminyl nitroxide and nitronyl nitroxide free radicals
✍ Scribed by Craig D. Smith; John P. Bartley; Steven E. Bottle
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 108 KB
- Volume
- 37
- Category
- Article
- ISSN
- 1076-5174
- DOI
- 10.1002/jms.339
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✦ Synopsis
Abstract
Electrospray ionization (ESI) mass spectra have been recorded for a range of substituted nitronyl nitroxide and iminyl nitroxide monoradicals and biradicals. Secondary species formed in the ESI source were observed as the dominant ions in both the iminyl nitroxide and nitronyl nitroxide spectra. Daughter ion spectrometry was used to establish fragmentation mechanisms for the nitronyl nitroxide and iminyl nitroxide moieties as well as the secondary species under ESI conditions. Copyright © 2002 John Wiley & Sons, Ltd.
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