Platinum complexes binuclear elimination

Attempts have been made to mimic proposed steps in catalysis at a platinum metal surface using well-characterized binuclear platinum complexes. A series of such complexes, stabilized by bridging bis(diphenyl-phosphino)methane ligands, has been prepared and structurally characterized. Included are diplati-num(I) complexes with Pt-Pt bonds, complexes with bridging hydride, carbonyl or methylene groups, and binuclear methylplatinum complexes. Reactions of these complexes have been studied and new binuclear oxidative addition and reductive elimination reactions, and a new catalyst for the water gas shift reaction have been discovered. 

In the following procedure for the preparation of binuclear platinum (II) complexes, tetrachloroethane is used as the solvent, thus eliminating the extraction process and obviating the necessity of adjusting the proportions of the hydrocarbons. 

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