Stereochemical effects in electron impact mass spectra of cis-trans isomeric 1,2,4,5-tetramethylcyclohexanes |
| |
Authors: | R. Herzschuh G. Mann H. Werner Elke Mende |
| |
Abstract: | The mass spectrometric fragmentation of the five cis-trans isomeric 1,2,4,5-tetramethylcyclohexanes is influenced by their configuration. The thermochemically stable isomers show a higher abundance of the [M? CH3]+ ions and a lower abundance of the [M? C2H5]+ ions than the strained isomers. The [M? CH3]+/[M? C2H5]+ intensity ratio correlates with the enthalpy difference ΔHisom and with the mean number of gauche arrangements ZgI of the stereoisomers. |
| |
Keywords: | |
|
|