Electrospray ionization mass spectrometry of stable nitroxide free radicals and two isoindoline nitroxide dimers |
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| Authors: | Smith C D Bartley J P Bottle S E Micallef A S Reid D A |
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| Institution: | CIDC, School of Physical Sciences, Queensland University of Technology, GPO Box 2434, Brisbane Q 4001, Australia. |
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| Abstract: | 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. |
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