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The behavior of stereoisomeric ions in the gas phase: The Case of cyclohexane‐hexacarboxylic methyl esters
Author(s) -
Audisio Guido,
Grassi Maria,
Daolio Sergio,
Traldi Pietro
Publication year - 1984
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.1210190504
Subject(s) - electron ionization , chemistry , cyclohexane , chemical ionization , mass spectrometry , deuterium , fragmentation (computing) , ion , isomerization , ionization , decomposition , analytical chemistry (journal) , photochemistry , organic chemistry , chromatography , atomic physics , physics , computer science , catalysis , operating system
Not only strong differences in relative abundances of product ions, but also different fragmentation pathways are observed in the electron impact mass spectrosopy of six stereoisomeric cyclohexanehexacarboxylic methyl esters. This unusual behaviour has been studied in detail with the aid of different ionization methyods, B / E and B 2 / E linked scans, exact mass measurements, deuterium labelling experiments and collisionally activated decomposition spectrometry. A close analogy between the isomerization observed under acidic conditions in condensed phase and that observed under chemical ionization (CH 4 ) conditions is underlined.