497064-59-2Relevant academic research and scientific papers
Reaction of triangulo-clusters (see abstract)
Ros, Renzo,Tassan, Augusto,Roulet, Raymond,Laurenczy, Gabor,Duprez, Virginie,Schenk, Kurt
, p. 3565 - 3570 (2007/10/03)
Hexafluoro-2-butyne, CF3C≡CCF3, reacts with the triangulo-clusters [Pt3(μ-CO)3(PR3)3] to give the diplatinum(o) compounds [Pt2(CO)2(PR3)2 (μ-η2:η2 -CF3 C≡CCF3)] {PR3 = PPh3 (1), PBzPh2 (2), PCy3 (3), PiPr3 (4)}. Spectroscopic properties are reported which are in accord with the molecular structures for 1 and 3, both having the acetylenic C-C axis perpendicular to the Pt-Pt axis, bridging two [Pt(CO)(PR3)] fragments in a μ-η2:η2 fashion. A large excess of hexafluorobutyne slowly converts 1 and 2 to the diplatinum(II) complexes [Pt2(CO)2(PR3)2 (μ-η1:η1-CF3C≡CCF3) 2] {PR3 = PPh3 (5), PBzPh2 (6)}, having two planar hexafluorobutyne bridges. This stereochemistry has been established by NMR and IR spectra, and confirmed by single-crystal X-ray diffraction.
