Document Detail


Comparison of collision- versus electron-induced dissociation of sodium chloride cluster cations.
MedLine Citation:
PMID:  19051229     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The collision-induced dissociation (CID) and electron-induced dissociation (EID) spectra of the [(NaCl)(m)(Na)(n)](n+) clusters of sodium chloride have been examined in a hybrid linear ion trap Fourier transform ion cyclotron resonance mass spectrometer. For singly charged cluster ions (n = 1), mass spectra for CID and EID of the precursor exhibit clear differences, which become more pronounced for the larger cluster ions. Whereas CID yields fewer product ions, EID produces all possible [(NaCl)(x)Na](+) product ions. In the case of doubly charged cluster ions, EID again leads to a larger variety of product ions. In addition, doubly charged product ions have been observed due to loss of neutral NaCl unit(s). For example, EID of [(NaCl)(11)(Na)(2)](2+) leads to formation of [(NaCl)(10)(Na)(2)](2+), which appears to be the smallest doubly charged cluster of sodium chloride observed experimentally to date. The most abundant product ions in EID spectra are predominantly magic number cluster ions. Finally, [(NaCl)(m)(Na)(2)](+*) radical cations, formed via capture of low-energy electrons, fragment via the loss of [(NaCl)(n)(Na)](*) radical neutrals.
Authors:
Linda Feketeová; Richard A J O'Hair
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Rapid communications in mass spectrometry : RCM     Volume:  23     ISSN:  0951-4198     ISO Abbreviation:  Rapid Commun. Mass Spectrom.     Publication Date:  2009 Jan 
Date Detail:
Created Date:  2008-12-18     Completed Date:  2009-03-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8802365     Medline TA:  Rapid Commun Mass Spectrom     Country:  England    
Other Details:
Languages:  eng     Pagination:  60-4     Citation Subset:  IM    
Copyright Information:
(c) 2008 John Wiley & Sons, Ltd.
Affiliation:
School of Chemistry, University of Melbourne, Victoria 3010, Australia.
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MeSH Terms
Descriptor/Qualifier:
Cations / chemistry
Electrons*
Fourier Analysis
Mass Spectrometry / methods*
Sodium Chloride / chemistry*
Spectrometry, Mass, Electrospray Ionization
Chemical
Reg. No./Substance:
0/Cations; 7647-14-5/Sodium Chloride

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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