Tandem transmetallation and oxidative addition reactions of [Sn(R)2(Ph2PC6H4-2-S)2] with transition metal complexes of the Group 9

The reactions of Sn(Ph)₂(Ph₂PC₆H₄-2-S)₂] with trans -M(Cl)(CO)(PPh₃)₂] M=Ir, Rh afford the complexes Rh(Ph₂PC₆H₄-2-S)₂(SnClPh₂)] (1) and Ir(CO)(Ph₂PC₆H₄-2-S)₂(SnClPh₂)] (2) as final products of two processes, a transmetallation reaction and an oxidative addition process. The crystal structures of both complexes have been determined, showing the rhodium compound to be into a slightly distorted square base pyramidal geometry, while that of the iridium derivative can be described as a distorted octahedron.