MIXED-LIGAND PALLADIUM(II) COMPLEXES CONTAINING O,O prime -CHELATED beta -DIKETONATE AND eta 3-CARBON-BONDED ETHYL 3-OXOBUTANOATE ANIONS. PREPARATION AND REACTIONS WITH SOME LEWIS BASES.

Article abstract of DOI:10.1246/bcsj.56.1393

Novel palladium(II) complexes in which anions of a beta -diketone and ethyl 3-oxobutanoate coordinate to the central metal atom by the O,O prime -chelation and the eta **3 carbon bonding, respectively, were prepared by the reactions of a dinuclear complex with thallium(I) beta -diketonates in benzene or acetone at room temperature. Reactions with Lewis bases such as triphenylphosphine, diethylamine, propylamine, and benzylamine were investigated. In almost all reactions, only the eta **3-carbon-bonded ester ligand was converted into a terminal-carbon-bonded one. The bonding modes for the ligands were determined by means of IR and **1H and **1**3C NMR spectroscopy.