... State Technical University, 620002, Ekaterinburg, Russia, and Institut für Organische Chemie, Universität Regensburg, D-93040 Regensburg ... of the 1,2,4-triazine 4-oxide has been chosen for S N H ... a Measured in ethanol solution 10 - 5 mol/L. b Anthracene in ethanol solution (φ ...