Add time:09/07/2019         Source:sciencedirect.com

The hitherto missing palladium complex (Ph2 PCH2CH2PPh2)Pd(SnMe3)2 has been successfully prepared by a simple method involving replacement of the chlorides in the complex (Ph2PCH2CH2 PPh2)PdCl2 by Me3Sn groups using neat trimethylstannane. The complex is more susceptible to decomposition in non-aqueous solution and less stable to thermolysis than its platinum analogue. The infrared spectra of the two complexes are compared. They show many similar features. The Raman spectrum and proton NMR spectra of the analogous platinum complex in deuterobenzene and in phosphorus tribromide are also reported. The spectra confirm the presence of platinum-tin bonds in the complex. In phosphorus tribromide the platinum complex decomposed giving trimethyltin(lI)bromide and dimethyltin(II)dibromide. A possible reaction leading to the formation of dimethyltin(II)dibromide is proposed. Attempted synthesis of non-chelated palladium-tin complexes by oxidative addition of trimethylstannane to palladium(II) halides and palladium(O) complexes was unsuccessful.

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