Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Photodissociation Spectroscopy and Photoreactions in t-Butylbenzene Cation and Its Daughter Cations
Yoshiya TakenoshitaRobert C. Dunbar
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1980 Volume 53 Issue 8 Pages 2185-2187

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Abstract

Photodissociation spectra were observed for t-butylbenzene cation (m/e 134) and its daughter ion (m/e 119). Photoproduction spectra of the ions at m/e 119 and m/e 91 were observed in the visible region. It was shown that the photodissociation of m/e 134 yields m/e 119 almost 100% at wavelengths above 450 nm. Below 450 nm m/e 91 and m/e 57 appear as light-produced species. From pressure dependence and double resonance results, it was concluded that m/e 91 is a direct photoproduct from m/e 119, and that m/e 57 is produced in an ion-molecule reaction of m/e 91 with neutral t-butylbenzene. The photodissociation spectrum of m/e 119 is very similar to that of m/e 105 obtained by protonation of styrene, and it is reasonable to assume that m/e 119 has the protonated methylstyrene structure.

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