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Mass spectrometric study of the dissociation of Group XI metal complexes with fatty acids and glycerolipids: Ag2H+ and Cu2H+ ion formation in the presence of a double bond by Voislav Blagojevic; Sopeia N. Samad; Laura Banu; Michael C. Thomas; Stephen J. Blanksby; Diethard K. Bohme is a Chemistry article available to read on EtoBox.
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Results of mass spectrometric studies are reported for the collisional dissociation of Group XI (Cu, Ag, Au) metal ion complexes with fatty acids (palmitic, oleic, linoleic and ␣-linolenic) and glycerolipids. Remarkably, the formation of M 2 H + ions (M = Cu, Ag) is observed as a dissociation product of the ion complexes containing more than one metal cation and only if the lipid in the complex contains a double bond. Ag 2 H + is formed as the main dissociation channel for all three of the fatty acids containing double bonds that were investigated while Cu 2 H + is formed with one of the fatty acids and, although abundant, is not the dominant dissociation channel. Also, Cu(I) and Ag(I) ion complexes were observed with glycerolipids (including triacylglycerols and glycerophospholipids) containing either saturated or unsaturated fatty acid substituents. Interestingly, Ag 2 H + ion is formed in a major fragmentation channel with the lipids that are able to form the complex with two metal cations (triacylglycerols and glycerophosphoglycerols), while lipids containing a fixed positive charge (glycerophospocholines) complex only with a single metal cation. The formation of Ag 2 H + ion i
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- Author
- Voislav Blagojevic; Sopeia N. Samad; Laura Banu; Michael C. Thomas; Stephen J. Blanksby; Diethard K. Bohme
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 1387-3806)
- Published
- 2011
- Language
- EN
- Field
- Chemistry (Physical Sciences)