Organopalladium and -platinum Compounds

This approach is especially useful for the synthesis of organopalladium and -platinum compounds. These oxidation-reduction reactions proceed via initial insertion of the transition metal into the carbon-mercury bond and subsequent loss of mercury ... 

R. Uson and J. Fomies, Adv. Oganomet. Chem., 1988, 28, 219-297. Organopalladium and Platinum Compounds with Pentahalophenyl Ligands. 

The most common route to alkyl or aryl complexes of the type [AuRL] is by the treatment of a halide complex with an alkyl- or aryllithium reagent. The first reactions of this type were performed (15) in 1959 [Eq. (5)], and the methyl and phenyl compounds were found to have chemical and thermal stabilities intermediate between those of the previously known organopalladium and -platinum complexes. 

Palladium(IV) and platinum(IV) compounds are accessible by oxidative addition of organic halides to the corresponding divalent species. In general, the Pt(IV) derivatives are more stable, but a number of organopalladium(IV) compounds have been isolated. 

In organoplatinum compounds, insertion into the metal-carbon bond proceeds similar to the organopalladium compounds [100-106]. For example, if methyl platinum compounds react with carbon monoxide, the carbon monoxide inserts into the Pt-C bond to afford the methylcarbonylplatinum complexes as shown in eqs. (21.32) and (21.33) [100,101]. 

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