Premium
Relative molecular mass information from aliphatic nitro compounds: A chemical ionization study
Author(s) -
Ballantine James A.,
Barton Jonathan D.,
Carter James F.,
Davies Jeremy P.,
Smith Keith,
Stedman Geoffrey,
Kingston Eric E.
Publication year - 1988
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.1210230102
Subject(s) - isobutane , chemical ionization , nitro , electron ionization , chemistry , mass spectrum , ion , methane , fragmentation (computing) , ionization , polyatomic ion , mass spectrometry , ammonia , atmospheric pressure chemical ionization , analytical chemistry (journal) , organic chemistry , chromatography , alkyl , operating system , computer science , catalysis
The mass spectra of a number of aliphatic nitro compounds have been studied using electron Ionization (EI) and a variety of chemical Ionization (CI) techniques in attempts to obtain relative molecular mass information. The use of positive ion ammonia chemical Ionization techniques gave very satisfactory results, providing abundant [M + NH4] + ions, not only from both primary and secondary nitro compounds, but also from the much more labile tertiary nitro compounds. However, the use of methane and isobutane positive ion CI or EI conditions resulted in facile fragmentation with little relative molecular mass information being made available. Negative ion CI using methane, isobutane or ammonia as moderating gases all gave abundant [M − 1] − ions with primary and secondary nitro compounds but at much reduced sensitivity.