ISSN:
0030-493X
Schlagwort(e):
Chemistry
;
Analytical Chemistry and Spectroscopy
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
The extent of isomerization of [C9H10]+· 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 [C9H10]+· 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 C9H10 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 [C9H10]+· ions continued to maintain unique ion structures (or mixtures of structures) at ion lifetimes of 10-6 s. Possible exceptions are the [C9H10]+· ions from allylbenzene and cyclopropylbenzene which gave indistinguishable collisionally activated dissociation and charge stripping spectra.
Zusätzliches Material:
4 Tab.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/oms.1210180105
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