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Negative and positive mass spectra of some substituted trinitromethanes
Author(s) -
Larkins John T.,
Nicholson Jesse M.,
Saalfeld Fred E.
Publication year - 1971
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.1210050304
Subject(s) - ion , chemistry , metastability , mass spectrum , spectral line , electron ionization , kinetic energy , mass spectrometry , methane , electron , atomic physics , analytical chemistry (journal) , physics , organic chemistry , chromatography , quantum mechanics , astronomy , ionization
Abstract The negative and positive ion mass spectra of a series of substituted trinitroalkanes (nitroform, tetranitro methane, methyl, fluoro, chloro, bromo and iodo‐trinitro methane) have been measured with an Aatlas CH‐4 Mass Spectrometer, under varying electron energies from 70 over the total range at which ions are produced. The modes of decomposition of the compounds are presented. A few metastable transitions are observable in the negative ion spectra, but only at high electron energies (ion pair region) and are very low in intensity. the negative and positive ion clastograms of these polynitro compounds showed little parent‐daughter ion correlation. Finally, the negative ions formed appear to contain excess amounts of kinetic energy even at low electron energies; as a retult there is a great deal of overlap in the various mechanisms for the formation of negative ions.