hide
Free keywords:
-
Abstract:
A range of 2,5-dihydro-1H-1,2,4-triazol-2-yl radicals 2b–p has been prepared by dehydrogenation of the corresponding 4,5-dihydro-1H-1,2,4-triazoles 5b–p which have been synthesized using various methods. EPR, ENDOR and NMR studies have led to a complete analysis and full assignment of all hyperfine coupling constants. The π-SOMO, having a node at the C(3) methine carbon, is mainly confined to the nitrogens of the five-membered ring, particularly to those of the hydrazyl moiety.