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A field ionization and collisionally activated dissociation/charge stripping study of some [C 9 H 10 ] +˙ ions
Author(s) -
Lay J. O.,
Gross M. L.,
Zwinselman J. J.,
Nibbering N. M. M.
Publication year - 1983
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.1210180105
Subject(s) - dissociation (chemistry) , ion , chemistry , isomerization , stripping (fiber) , ionization , analytical chemistry (journal) , field desorption , chemical ionization , mass spectrum , chromatography , materials science , organic chemistry , catalysis , composite material
Abstract The extent of isomerization of [C 9 H 10 ] +˙ ions, with lifetimes of approximately 10 −11 and 10 −6 s has been investigated using field ionization, collisionally activated dissociation and charge stripping techniques. The [C 9 H 10 ] +˙ ions which were investigated included the molecular ions of α‐methylstyrene, β‐methylstyrene, o ‐methylstyrene, m ‐methylstyrene, p ‐methylstyrene, indan, cyclopropylbenzene, allylbenzene and the product of water loss from 3‐phenylpropanol. The field ionization spectra of all the C 9 H 10 hydrocarbons were different indicating that isomerization to a common ion structure had not occurred to a measurable extent for ions with lifetimes of approximately 10 −11 s. Collisionally activated dissociation and charge stripping results indicated that most of the [C 9 H 10 ] +˙ ions continued to maintain unique ion structures (or mixtures of structures) at ion lifetimes of 10 −6 s. Possible exceptions are the [C 9 H 10 ] +˙ ions from allylbenzene and cyclopropylbenzene which gave indistinguishable collisionally activated dissociation and charge stripping spectra.