ESR study of the reaction of trithiazyl trichloride with primary aromatic amines

Benzenamines (1) react with 1,3,5‐trichloro‐1λ4,3λ4,5λ4‐1,3,5,2,4,6‐trithiatriazine (2) to form the novel radicals 2‐(2λ4‐2,4,‐dithia‐1,3‐diaza‐2‐chloro‐1,3‐butadien‐1‐yl)‐2λ4‐2,1,3‐benzothiadiazol‐1‐yls (4) or 2‐(5‐chlora‐2λ4‐2,4‐dithia‐1,3‐diaza‐1,2‐pentadien‐1‐yl)‐2λ4‐2,1,3‐benzothiadiazol‐1‐yls (4′). ESR hyperfine splitting constants of 20 different radicals of type 4 are presented, and the mechanism of their formation and the suggested structure of 4 are discussed.