Pyrolyses of diaryl(phosphine)platinum(II) complexes: effect of added phosphines
- 1 January 1976
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 14,p. 1310-1314
- https://doi.org/10.1039/dt9760001310
Abstract
The presence of additional tertiary phosphine, L or P–P, promotes the thermal reductive elimination of biaryl, R2, from cis-[PtR2L2] or [PtR2(P–P)](R = Ph or C6H4Me-4; L = PPh3; P–P = Ph2PC2H4PPh2 or Ph2PCH2PPh2). Secondary decomposition modes, which operate in the pyrolysis of the platinum complexes themselves, are largely suppressed, and the primary metal-containing products are [PtL3] or [Pt(P–P)2]. The platinum(O) complexes themselves undergo thermolysis at elevated temperatures, and the products from the chelating phosphine derivatives indicate a reaction route involving insertion of Pt0 into alkyl–phosphorus bonds. There is evidence that in some cases added phosphine exchanges with that already in the complex before thermolysis begins.Keywords
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