Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
The Radiolysis of Liquid cis-2-Butene
Yoshihiko HatanoShoji ShidaShin Sato
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1964 Volume 37 Issue 12 Pages 1854-1858

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Abstract

The radiolysis of cis-2-butene has been studied in the liquid phase at room temperature.
(1) The major products (and their G-values) were hydrogen (1.02), n-butane (0.83), 1-butene (0.40), trans-2-butene (2.29), C8 hydrocarbons (2.30), and higher polymers, the G-values being independent of the total dose. Small amounts of C1∼C3 and C5∼C7 hydrocarbons were also formed. The hydrogen and the lower hydrocarbons except for n-butane were found, by using p-benzoquinone as a radical scavenger, to be produced for the most part through the molecular mechanism.
(2) The addition of benzene, naphthalene, and anthracene to liquid cis-butene have remarkable effects on the formation of trans-2-butene; thus, the cis-trans isomerization increases at a lower concentration of additives, while it decreases at a higher concentration of additives. The radical scavenging effect cannot explain these results. From a comparison of the experimental results with the ionization potentials and electron affinities of aromatics, it has been concluded that the increase in the isomerization at lower concentrations is due to the electron capture effect of additives, while the decrease at higher concentrations is due to the charge transfer from the butene to the additives.

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