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An ion‐trap mass spectrometric study on electron impact and collisionally induced decomposition pathways of some phenothiazine S‐oxides
Author(s) -
Guidugli F.,
Curcuruto O.,
Traldi P.,
HegedusVajda J.,
Tamas J.,
Taulov I. G.
Publication year - 1993
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290070208
Subject(s) - chemistry , phenothiazine , electron ionization , ion , mass spectrometry , mass spectrum , ionization , chemical ionization , molecule , ionization energy , analytical chemistry (journal) , ion trap , ion source , decomposition , polyatomic ion , electron , organic chemistry , chromatography , medicine , physics , quantum mechanics , pharmacology
The electron ionization (EI) mass spectra and the daughter‐ion spectra of the EI‐generated main fragments of phenothiazine S‐oxides and its two N‐substituted derivatives have been studied by means of ion‐trap mass spectrometry (ITMS). Interesting differences with the data already published on the same molecules as obtained by a magnetic sector instrument have been rationalized by considering how, under ITMS conditions, charge exchange or self‐chemical‐ionization phenomena can take place, leading to molecular species with low energy content.