R. Herzschuh, G. Mann, D. Rennecke
Feb 1, 1985
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Journal
Journal of Mass Spectrometry
Abstract
The mass spectra of 10 isomeric trimethylcyclohexanes and six cis–trans isomeric 1,2,3,5-tetramethylcyclohexanes are discussed. The thermochemically stable isomers show a higher abundance of the [MCH3]+ ions and a lower abundance of the [MC2H5]+ ions than the strained isomers. The log of the intensity ratio for loss of methyl and ethyl from the molecular ions correlates well with the strain energies and with the mean number of gauche arrangements of the stereoisomers.