Organic Mass Spectrometry p. 14 - 17 (1985)
Update date:2022-08-11
Topics:
Wolkoff, Peder
Holmes, John L.
Lossing, F. P.
The kinetic energy release for methyl loss from the molecular ion of 2-methylpentane increases c. twofold over the time-range 1-15 μs.This results from a mixture of secondary and tertiary pentyl cations.The appearance energy showed that at threshold (and long times) only tertiary ions are formed.The molecular ion of 2-methylhexane produces tertiary hexyl ions by loss of methyl at threshold, but in the μs time-frame only secondary hexyl ions appear to be formed, because the kinetic energy release is small and independent of the observation time.
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(1999)
