Luminescent platinum-tin-bonded metallacycles: First oxidative addition of Sn-S bonds

In the first examples of oxidative addition of tin-sulfur bonds to a transition-metal complex, the ring compounds (R(2)SnS)(3) (R = Me, Ph) react with [PtMe(2)((t)bu(2)-bpy)]((t)bu(2)bpy = 4,4'-di-tert-butyl-2,2'-bipyridine) to give the new luminescent organoplatinum(IV) complexes [PtMe(2)(R(2)SnS)(2)((t)bu(2)bpy)] (1 and 2; R = Me and Ph, respectively), which contain, the new five-membered PtSnSSnS ring. The complex [PtMe(2){(SnMe(2))S(SnPh(2))S}((t)bu(2)bpy)] (3) is formed selectively by any of the redistribution reactions between. 1 and (Ph(2)SnS)(3), 2 and (Me(2)SnS)(3), or 1 and 2.