Elucidation of electron ionization mass spectrometric fragmentation pathways of trimethylsilyl ether derivatives of vicinal diols deriving from haplamine by collision-induced dissociation gas chromatography/tandem mass spectrometry and18O labelling

2014 ◽  
Vol 28 (9) ◽  
pp. 1004-1010 ◽  
Author(s):  
Sompheary Ea ◽  
Claude Aubert ◽  
Jean-François Rontani ◽  
Yannick Teral ◽  
Mylène Campredon
Keyword(s):  
Trimethylsilyl Ether ◽  
Mass Spectrometric ◽  
Collision Induced Dissociation ◽  
Ionization Mass ◽  
Tandem Mass ◽  
Fragmentation Pathways ◽  
Chromatography Tandem Mass Spectrometry ◽  
Vicinal Diols ◽  
Mass Spectrometric Fragmentation ◽  
Derivatives Of

Formation of Organometallic Species, [M – H]+ Ions and Radical Cations upon Mass Spectrometric Fragmentation of Mercury–Crown Ether Complexes

2009 ◽  
Vol 15 (4) ◽  
pp. 479-486 ◽  
Author(s):  
Rafał Frański ◽  
Błażej Gierczyk
Keyword(s):  
Mass Spectrometry ◽  
Crown Ether ◽  
Radical Cations ◽  
Mass Spectrometric ◽  
Tandem Mass ◽  
Fragmentation Pathways ◽  
Factors Influencing ◽  
Crown Ether Complexes ◽  
Mass Spectrometric Fragmentation ◽  
Ether Molecule

Mass spectrometric fragmentation pathways of [M + HgClO4]+ (M – crown ether molecule), determined by tandem mass spectrometry experiments, are discussed in detail. The decomposition of [M + HgClO4]+ proceeds along three fragmentation pathways: formation of [M – H]+ ions, formation of organometallic species, namely [M – H + Hg]+ ions, and formation of radical cations [M]+•. The factors influencing these processes, namely crown ether cavities and the presence of electron withdrawing/electron donor groups, have been discussed.

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