1973 Volume 46 Issue 10 Pages 3043-3048
The decomposition of the (M–18)\underset.+ ion of aliphatic alcohols and that of the M\underset.+ ion of 1-alkenes are studied. The temperature effect of the ion source of a mass spectrometer on the ratios of the intensities of these ions, those of the ions produced from them by C2H4 elimination, and those of the metastable ions for the corresponding fragmentation was measured and was compared with the results to be expected from a simple QET consideration. A discrepancy between the result expected and the experimental result was found for 1-alkenes. In order to clarify the cause of the discrepancy, the photoelectron spectrum was measured for 1-hexanol and for 1-hexene and was assumed to represent the internal energy distribution function, P(E), for each of these substances. Taking the shape of the P(E) into account, the result for 1-alkenes was explained.
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