Reactions of the [PtC2L2] Complexes (L=Sulfide or Tertiary Phosphine) with β-Diketonate Anions

Abstract cis- and trans-[PtCl2(Et2S)2] as well as [PtCl2(EtSCH2CH2SEt)] reacted with thallium(I) β-diketonates, Tl(β-dik), to give complexes containing a central-carbon-bonded β-dik ligand. The reaction of cis-[PtCl2(PEt3)2] with Tl(acac) (acac=acetylacetonato) did not give an acetylacetonato complex, but resulted in [Pt(CO3)(PEt3)2], while trans-[PtCl2(PEt3)2] yielded [PtCl(acac)(PEt3)]. [Pt(PPh3)2(H2O)2](ClO4)2 derived from cis-[PtCl2(PPh3)2] reacted with K(acac) and K(tfac) (tfac=trifluoroacetylacetonato) to afford [Pt(acac)(PPh3)2]ClO4 and [Pt(tfac)(PPh3)2]ClO4, respectively. Bases such as Et3N, K(acac), and K(tfac) removed a proton from the latter complex to give [Pt(tfac(2–)-C,O)(PPh3)2] containing a C,O-chelated tfac dianion.