Abstract
The reaction of the heterobinuclear metal μ-allenyl complexes (PPh3)2Pt(μ-η 1:η 2 α, β -C(R)=C=CH2)Ru(CO)Cp (R=H (1), Ph (2)) with (PPh3)AuO3SCF3 in THF at −78°C to room temperature affords the trimetallic products [(PPh3)2Pt(μ 2-CO)RuCpAu(PPh3)(μ 3-η 1:η 3:η 1-CH2CCR)]+O3SCF− 3 (R=H (3), Ph (4)) in 46 and 55% isolated yield, respectively. The products were characterized by a combination of elemental analysis, FAB mass spectrometry, and IR and 1H, 13C, and 31P NMR spectroscopy. The structure of 4 was elucidated by a single-crystal X-ray analysis. The crystal contains discrete trimetallic RuPtAu cations and CF3SO− 3 anions. In the cation, a Pt–Ru bond of 2.7171(6) Å is supported by a semibridging CO and a CH2CCPh allyl, which is η 3-bonded to Ru, and η 1-bonded to each of Pt (through the CPh carbon) and Au (through the central carbon). The Ph3P–Au–C fragment is close to linear (175.0(2)°), and the coordination environment around Pt is distorted square planar. Complex 3 appears to have the same type of structure as 4 from spectroscopic data.
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Willis, R.R., Calligaris, M., Faleschini, P. et al. Reaction of the Binuclear Ruthenium-Platinum Allenyl Complexes (PPh3)2Pt(μ-η1:η2α, β-C(R)=C=CH2)Ru(CO)Cp (R=H, Ph) with (PPh3)AuO3SCF3. The Synthesis and Characterization of a Trimetallic 1:1 Adduct of the Reactants. Journal of Cluster Science 11, 233–242 (2000). https://doi.org/10.1023/A:1009029202117
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DOI: https://doi.org/10.1023/A:1009029202117