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Radical Cations of Tetrazinodi(heteroarenes): An ESR and ENDOR Study

✍ Scribed by Fabian Gerson; Axel Lamprecht

Publisher
John Wiley and Sons
Year
1994
Tongue
German
Weight
306 KB
Volume
77
Category
Article
ISSN
0018-019X

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✦ Synopsis

I4N-and 'H-Coupling constants, determined by ESR, ENDOR, and general-TRIPLE-resonance spectroscopy, are reported for the radical cations of tetrazinodi(heteroarenes) 1-8. The results comply with the expectation that donor properties of these compounds are mainly due to the electron-rich dihydrotetrazine ring.

Introduction. -The title compounds [l] [2], a novel class of heteroarenes containing 1 ,Cdihydro-1,2,4,5-tetrazine as the electron-rich moiety, are powerful donors [3] [4] which have very low oxidation potentials in solution (0-0.5 V us. Ag/AgCl) [2] [3] and quite moderate ionization energies in the gas phase (6.0-6.5 eV) IS]. Accordingly, forma-

Exper. error: +0.002 mT in laN,,I and in laEb,l > 0.1 mT, 10.001 mT in lawl < 0 1 mT, and M.0001 in g.

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