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Losses of isobaric neutral species from molecular ions of isomeric nitroanisoles
Author(s) -
Macdonald Colin G.,
Lacey Michael J.
Publication year - 1982
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.1210170208
Subject(s) - isobaric process , ion , fragmentation (computing) , polyatomic ion , chemistry , mass spectrometry , mass spectrum , mass , analytical chemistry (journal) , physics , chromatography , organic chemistry , computer science , thermodynamics , operating system
Alternative losses of the isobaric neutral species CH 2 O and NO˙ have been assessed for molecular ions of isomeric nitroanisoles fragmenting in the ion source and the first field free region of a double focusing mass spectrometer. Mass analyses of the primary fragment ions indicate that specific loss of CH 2 O occurs from molecular ions of 2‐nitroanisole, while specific loss of NO˙ occurs from molecular ions of 3‐nitroanisole. Although the peak due to [MNO] + ions is negligible in the mass spectrum of 2‐nitroanisole, evidence is presented to show that they are transient intermediates in the consecutive fragmentation for loss of the elements of CNO 2 from the molecular ions.