Dalton communications. Convenient preparations of the mixed 1,3,2,4-/1,2,3,5-dithiadiazolylium salt [SNSNC–C6H4–CNSSN][AsF6]2 and the first mixed free radical, p-[SNSNC–C6H4–CNSSN]2˙

Abstract

The salt [p-NCC₆H₄–[graphic omitted]]Cl {prepared by reaction of Li[p-NCC₆H₄C(NSiMe₃)₂] with SCl₂} was converted into [p-NCC₆H₄–[graphic omitted]]AsF₆(with AgAsF₆) and then reacted with [SNS]AsF₆ to provide [[graphic omitted]–C₆H₄–[graphic omitted]][AsF₆]₂ in 92% recovered yield. Complete reduction of this material produced the first mixed 1,3,2,4-/1,2,3,5-dithiadiazole diradical, [[graphic omitted]–C₆H₄–[graphic omitted]]²˙.