The preparation of some 4-phenyl-1,2,3,5-dithiadiazolium salts and a dimeric 4-phenyl-1,2,3,5-dithiazole, (PhCN2S2)2

Abstract

4-Phenyl-1,2,3,5-dithiadiazolium chloride, (PhCN₂S₂)Cl, has been converted into further salts, (PhCN₂S₂)X, where X = FeCl₄, Br, and NCS. Syntheses of (CH₃CN₂S₂)Cl and (p-ClC₆H₄CN₂S₂)Cl are also described. (PhCN₂S₂)Cl is reduced by metals (e.g. Zn/Cu) to give (PhCN₂S₂)₂ which is isoelectronic with S₆N₄²⁺.