Reactions of Bis(β-diketonato)palladium(II) and -platinum(II) with Tertiary Phosphines

Bis(β-diketonato)palladium(II) and -platinum(II) readily react with tertiary phosphines (L) to afford [M(β-dik)(β-dik-O)L], [M(β-dik)L2](β-dik), [ML4](β-dik)2, [M(β-dik-O)2L2], and [M(β-dik)(β-dik-C)L] complexes, which were characterized mainly by infrared and 1H and 13C NMR spectroscopy. Factors influencing the relative stability of each bonding mode of β-diketonate anions were investigated.