Entry to alkynylplatinum(IV) chemistry using hypervalent iodine(III) reagents, and the synthesis of triphenyl{4,4′-bis(tert-butyl)-2,2′-bipyridine}iodoplatinum(IV)

The reaction of phenyl(alkynyl)iodine(III) triflates with diorganoplatinum(II) complexes provides a general route for the synthesis of a new class of alkynylplatinum(IV) complexes containing PtIVR2(CCR2) groups, e.g., the 4,4′-bis(tert-butyl)-2,2′-bipyridine complexes PtIR2(CCSiMe3)(But2bpy) (R=Me, Ph); IPh2(OTf) reacts with PtPh2(But2bpy) to form the first archetypal triarylplatinum(IV) complex PtIPh3(But2bpy).