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Isomeric [C7H8]+˙ and [C7H7]+ ions

✍ Scribed by Guohong Zhao; Tino Gäumann

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
719 KB
Volume
27
Category
Article
ISSN
1076-5174

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✦ Synopsis

The photofragmentation of an equimolar mixture of cycloheptatriene and I l,Me-''C, 1 toluene was studied with photons of wavelength 488 nm in order to obtain a direct comparison between the two isomers. The idea was to check the extent to which these photons could be used as a probe to study the fragmentation processes. Whenever feasible, the data were treated by a kinetic scheme and rate constants were obtained by a non-linear regression. It could be shown that the decay of both isomers follows a time behaviour described by two exponential decays.

Evidence is presented that the faster decay leads to the benzyl ion. The photofragmentation of the [C7H7]+ ions follows a complex behaviour that can be superimposed by selective ion-molecule reactions.

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