Preparation and Structure of a Sixteen-Membered Ring with Alternating CN and SN Groups

The reaction of trisilylated benzamidines ArCN2(SiMe3)3 with PhSCl in a 1:3 molar ratio produces cyclic compounds of the type (ArCNS(Ph)N)n (n=2, 4) in addition the diazenes trans-PhSNC(Ar)N=NC(Ar)NSPh. The X-ray structure of the sixteen-membered ring (4-BrC6H4)4C4N8S4Ph4 has been determined.