1.3.2.4- Dithiadiazolylium salts, from nitriles

Dithiadiazolylium cations (as the chloride salt) were first prepared in 1977 (77INCL143) from the reaction of thiazyl chloride 11 with organic nitriles. Thiazyl chloride 11 exists as a trimer 11a in the solid state (61AX562), but partial dissociation to the monomer lib occurs in the vapor phase (70IC1079) and in solution (88IC2749). 

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