76600-28-7Relevant academic research and scientific papers
Synthesis, structure, and bonding in the complex cation [Pt2Me3(μ-Ph2PCH2PPh 2)2]+: An example of a donor-acceptor metal-metal bond
Brown, Michael P.,Cooper, Susan J.,Frew, Aileen A.,Manojlovi?-Muir, Ljubica,Muir, Kenneth W.,Puddephatt, Richard J.,Seddon, Kenneth R.,Thomson, Mary A.
, p. 1500 - 1507 (2008/10/08)
Several preparative routes to the binuclear trimethyldiplatinum complex cation [Pt2Me3(μ-Ph2PCH2PPh 2)2]+, isolated as the PF6-, SbF6-, or ClO4- salts, have been found, and some aspects of the mechanism of formation from mononuclear precursors have been elucidated. The complex as the PF6- salt crystallizes in the space group C2h5-P21/n with four molecules in a unit cell whose dimensions are a = 10.220 (4) A?, b = 25.522 (6) A?, c = 23.832 (3) A?, and β = 93.57 (3)°. On the basis of 5467 independent reflections with I ≥ 3σ(I), the structure was refined by full-matrix least-squares techniques to conventional agreement indices of R = 0.081 and Rw = 0.13. The complex cation contains a Pt-Pt separation of 2.769 A? formulated as a PtII→PtII donor-acceptor bond. This formulation is supported by consideration of the NMR coupling constants derived from analysis of the complex 1H and 31P NMR spectra. The Pt-Pt bond in this complex has a lower trans influence than Pt-Pt homopolar bonds in binuclear platinum(I) complexes.
