✦ LIBER ✦

Electrospray ionization mass spectrometry of stable nitroxide free radicals and two isoindoline nitroxide dimers

✍ Scribed by Smith, Craig D.; Bartley, John P.; Bottle, Steven E.; Micallef, Aaron S.; Reid, Damien A.

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 77 KB
Volume: 35
Category: Article
ISSN: 1076-5174
DOI: 10.1002/(sici)1096-9888(200005)35:5<607::aid-jms967>3.0.co;2-7

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✦ Synopsis

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 ion spectroscopy was used to establish fragmentation mechanisms for the nitroxides under ESI conditions.