Oxidative addition of MeI to a rollover complex of Pt(II): isolation of the kinetic product.

A pair of new Pt(II)/Pt(IV) 2,2′-bipyridine cyclometalated rollover
complexes have been synthesized and characterized. [Pt(bpy-H)(CH3)(PMe3)] (1),
where bpy-H = κ2N,C-2,2′-bipyridine, was obtained from the electron-rich precursor
cis-[Pt(CH3)2(DMSO)2] with a one-pot, two step synthesis; its reactivity has been
tested with CH3I, giving the corresponding Pt(IV) complex cis-[Pt(bpy-H)-
(CH3)2(I)(PMe3)] (2), which was fully characterized. Crystals suitable for X-ray
analysis were obtained and allowed the determination of the structure of isomer 2A
which is the product of the trans addition of CH3I, usually thought of as the kinetic
product.