The σ-Bonded Palladium(II) Complex of [π-(Dimethylaminomethyl)-cyclopentadienyl]tetraphenylcyclobutadienecobalt(I)

[π-(Dimethylaminomethyl)cyclopentadienyl]tetraphenylcyclobutadienecobalt(I) reacts with lithium tetrachloropalladate(II) in the presence of sodium acetate to give an ortho-palladated binuclear complex. The σ-bonded structure of the complex was confirmed by studies of the IR and 1H-NMR spectra and of the reactions with triphenylphosphine, thallium(I) acetylacetonate, and lithium aluminum deuteride. The reactions of the σ-bonded complex with carbon monoxide and olefins have been examined.