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The gas phase structure of some protonated and ethylated aromatic amines
Author(s) -
Maquestiau A.,
Van Haverbeke Y.,
Mispreuve H.,
Flammang R.,
Harris J. A.,
Howe I.,
Bey J. H.
Publication year - 1980
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.1210150309
Subject(s) - protonation , chemistry , dissociation (chemistry) , mass spectrometry , benzimidazole , mass spectrum , ion , aniline , chemical ionization , collision induced dissociation , pyridine , photochemistry , tandem mass spectrometry , organic chemistry , ionization , chromatography
The fundamental processes of protonation and ethylation, occurring in a methane chemical ionization source, have been investigated for a variety of aromatic amines. The positions of protonation and ethylation on the substrate amines were determined by generating isomeric ions either by protonation of neutral ethyl substituted amines or by ethylation of the amines themselves. The product ions were investigated for structural differences via collision induced dissociation and subsequent analysis via mass analysed ion kinetic energy spectrometry. Similarities and differences between mass analysed ion kinetic energy/collision induced dissociation spectra of these isomeric ions were used to determine protonation and ethylation sites for imidazole, benzimidazole, indazole, pyrrole, pyridine and aniline.