Appearance energies and the kinetic shift. Loss of HCN from the benzonitrile molecular ion
- 1 November 1979
- journal article
- research article
- Published by Wiley in Journal of Mass Spectrometry
- Vol. 14 (11) , 601-605
- https://doi.org/10.1002/oms.1210141106
Abstract
Measurement of the appearance energy of the [C6H4]+⋅ ion from benzonitrile molecular ions fragmenting in the second field free region of a reverse geometry double focusing mass spectrometer, gives a value free of any significant kinetic shift. The heat of formation of the [C6H4]+⋅ ion calculated using this appearance energy is 1348 kJ mol−1, which is consistent with the ion having the benzyne structure.Keywords
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