Journal of Organic Chemistry p. 2138 - 2141 (1981)
Update date:2022-08-04
Topics:
Counotte-Potman, Anda
Plas, Henk C. van der
Veldhuizen, Beb van
1H NMR spectroscopy of some 1,6-dihydro-3-aryl(alkyl)-1,2,4,5-tetrazines and their conjugate bases and acids, at various temperatures, shows that these species are all homoaromatic.The hydrogens at position 6 have a different orientation toward the aromatic ring; one is oriented above and the other away from the aromatic ring, thus resulting in a large difference in chemical shift.The various parameters (ΔH(excit.), ΔS(excit.), and ΔG(excit.)) are determined by dynamic NMR measurements.
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