ISOLATION AND CHARACTERIZATION OF THE PYRIDAZINE (PYDZ) BRIDGED HALOGENOTRIMETHYLPLATINUM(IV) COMPLEXES [(PTXME3)2(MU-PYDZ)] (X=CL, BR, I) - X-RAY CRYSTAL-STRUCTURE OF [(PTIME3)2(MU-PYDZ)]

The bridged dinuclear platinum(IV) complexes [(PtXMe3)2(mu-pydz)] (X = Cl, Br, I) were isolated as minor products from the reaction between pyridazine (pydz) and the halogenotrimethylplatinum(IV) tetramers. The X-ray crystal structure of the iodo complex reveals both a double halide bridge and a pyridazine bridged structure with a Pt...Pt non-bonded distance of 3.5937(5) angstrom. The platinum atoms show only a slight deviation from an idealized octahedral geometry, but the structure is folded in the equatorial plane by 51.5-degrees to accommodate the iodines between the two platinum moieties.