NDLI: Electron-capture—Induced dissociation of protoporphyrin IX ions

Content Provider	Springer Nature Link
Author	Bernigaud, Virgile Drenck, Kasper Huber, Bernd A. Hvelplund, Preben Jabot, Tristan Kadhane, Umesh Kirketerp, Maj Britt Suhr Liu, Bo Lykkegaard, Morten Køcks Manil, Bruno Nielsen, Steen Brøndsted
Copyright Year	2008
Abstract	Electron-capture induced dissociation of protoporphyrin cations and anions has been studied. The cations captured two electrons in two successive collisions and were converted to the corresponding even-electron anions. About one fifth of the ions lost a hydrogen atom to become radical anions but otherwise very little fragmentation was observed. The anions captured an electron to become dianions. No hydrogen loss occurred, and the only fragmentation channel observed was loss of CO$_{2}$H, to give a doubly charged carbanion. Our results indicate that protoporphyrin ions are very efficient in accommodating one or even two electrons in the lowest unoccupied molecular orbital of the porphyrin macrocycle, and that electron capture induces only limited dissociation.
Starting Page	809
Ending Page	813
Page Count	5
File Format	PDF
ISSN	10440305
Journal	Journal of The American Society for Mass Spectrometry
Volume Number	19
Issue Number	6
e-ISSN	18791123
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-11-22
Publisher Institution	The American Society for Mass Spectrometry
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Analytical Chemistry Biotechnology Organic Chemistry Proteomics Bioinformatics
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Structural Biology

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