[P3N3F5NS(O)Cl]− and [{P4N4F6(NS(Cl)N)}2]2−, the first chloro imino- and chloro bis(imino) sulfinates

In CH3CN solution at −30 °C, [TAS]+[P3N3F5NS(O)F]− (2) is formed from TASF and P3N3F5NSO, the compound readily decomposes to give P3N3F6 and [TAS]+[NSO]−. [TAS]+[P3N3F5NS(O)Cl]− (3) and [TAS+]2 [{P4N4F6(NS(Cl)N)}2]2− (5) were prepared from TASCl and P3N3F5NSO and 1,5-P4N4F6(NSO)2, respectively, and characterised by X-ray crystallography.