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Gas‐phase fragmentation reactions of protonated glycerol and its oligomers: Metastable and collision‐induced dissociation reactions, associated deuterium isotope effects and the structure of [C 3 H 5 O] + , [C 2 H 5 O] + , [C 2 H 4 O] +. and [C 2 H 3 O] + ions
Author(s) -
Dass Chhabil
Publication year - 1994
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210290906
Subject(s) - chemistry , protonation , fragmentation (computing) , dissociation (chemistry) , collision induced dissociation , deuterium , glycerol , molecule , ion , mass spectrometry , mass spectrum , tandem mass spectrometry , kinetic isotope effect , metastability , photochemistry , analytical chemistry (journal) , organic chemistry , chromatography , atomic physics , physics , computer science , operating system
The chemistry of glycerol subjected to a high‐energy particle beam was explored by studying the mass spectral fragmentation characteristics of gas‐phase protonated glycerol and its oligomers by using tandem mass spectrometry. Both unimolecular metastable and collision‐induced dissociation reactions were studied. Collision activation of protonated glycerol results in elimiation of H 2 O and CH 3 OH molecules. The resulting ions undergo further fragmentations. The origin of several fragment ions was established by obtaining their product and precursor ion spectra. Corresponding data for the deuterated analogs support those results. The structures of the fragment ions of compositions [C 3 H 5 O] + , [C 2 H 5 O] + , [C 2 H 4 O] +. and [C 2 H 3 O] + derived from protonated glycerol were also identified. Proton‐bound glycerol oligomers fragment principally via loss of neutral glycerol molecules. Dissociation of mixed clusters of glycerol and deuterated glycerol displays normal secondary isotope effects.