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Optimized production of the acylium diagnostic ions in the chemical ionization NO + mass spectra of long‐chain monoolefins
Author(s) -
Einhornt J.,
Malosse C.
Publication year - 1990
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.1210250111
Subject(s) - ion , mass spectrum , ionization , spectral line , reactivity (psychology) , chemistry , chain (unit) , mass spectrometry , double bond , production (economics) , chemical ionization , computational chemistry , analytical chemistry (journal) , medicinal chemistry , physics , organic chemistry , chromatography , medicine , alternative medicine , pathology , astronomy , economics , macroeconomics
A recent reinvestigation of the reactivity of NO + towards straight‐chain monoolefinic compounds revealed that the characteristic acylium ions, previously reported for alkenyl acetates and related compounds, could also be obtained from alkenes and alkenoic acids (or esters). In this study, the influence of the sample pressure and that of NO on the production of the acylium ions was investigated, leading to disappearance graphs indicative of a strong dependence on these experimental factors. This gives a further explanation for previous apparent discrepancies in the literature and the optimum conditions of use for double‐bond location in a variety of substituted or unsubstituted monoolefins.