88303-51-9Relevant academic research and scientific papers
A multinuclear NMR investigation of stannous chloride promoted ligand exchange of platinum phosphole complexes
Holt, Mark S.,Jeffrey Macdougall,Mathey, Fran?ois,Nelson, John H.
, p. 449 - 453 (2008/10/08)
A thorough investigation by 31P{1H}, 119Sn, and 195Pt{1H} NMR spectroscopy of solutions containing dichlorobis(1-R-3,4-dimethylphosphole)platinum(II) (L2PtCl2) and SnCl2 under a variety of conditions [various solvents, substituents (R = CH3, n-C4H9, t-C4H9, C6H5, and C6H5CH2), stoichiometries, times, and temperatures] demonstrated that the addition of solid anhydrous SnCl2 to solutions of the phosphole complexes labilizes these phosphole complexes toward complete ligand exchange producing several species in solution. These include cis- and trans-L2Pt(SnCl3)Cl, trans-L2Pt(SnCl3)2, cis-L2PtCl2, and, surprisingly, the pentacoordinate species L3PtCl2. The L3PtCl2 species are significant as their presence demonstrates that addition of a chloride acceptor (SnCl2) to a solution of a noble-metal complex not only labilizes the metal-chloride bond as anticipated but also labilizes the other metal-ligand bonds as well.
