ChemInform Abstract: Oxidative Addition to Three‐Coordinate Platinum(0) and Palladium(0) Olefin Complexes Affording Stable Five‐Coordinate Products.

Synthesis, Structure, and Reactivity of the Novel Pentacoordinate Palladium Complex [Pd(Phen)2(CO2CH3)](PF6)

“…Complexes of substituted phenanthrolines with pentacoordinate palladium and platinum halides and cyananide were studied, and the structure of [Pt(CN)phen) 2 ](PF 6 ) was reported . In the case of palladium, they can be synthesized either by reacting a four-coordinate complex with an olefin − or by oxidative addition of an alkyl halide to three-coordinate palladium(0) olefin complexes . Steric hindrance of the N−N‘ chelating ligand is a demanding requirement for the stabilization of five-coordinate palladium complexes …”