Issue 15, 1974

Thermal decomposition of some acyl(dialkyl)-, dialkyl(allyl)-, dialkyl(benzyl)-, and trialkyl-halogenobis(dimethylphenylphosphine)platinum(IV) complexes

Abstract

The complexes [PtR2(R′)X(PMe2Ph)2](X = halogen : R = Me, R′= benzyl or allyl; R = CD3, R′= acetyl; R = Et, R′= Me) have been prepared. On pyrolysis, the benzyl and acetyl complexes undergo reductive elimination with C–C bond formation, the former giving ethane and ethylbenzene and the latter giving CD3COMe as the organic products. Acetone elimination from the complex [PtMe2(COMe)Cl(PMe2Ph)2] has been studied by differential-scanning calorimetry and a mean value of the Pt–C σ-bond energy has been estimated. The complex [PtBr(Me)2(CH2CH[double bond, length as m-dash]CH2)(PMe2Ph)2] apparently decomposes by a free-radical mechanism, and [PtI(Me)Et2(PMe2Ph)2] decomposes by a mechanism involving β-elimination of ethylene as the first step. The relative ease of elimination of a series of alkyl, acyl, and allyl groups from PtIV complexes has been deduced.

Article information

Article type
Paper

J. Chem. Soc., Dalton Trans., 1974, 1613-1618

Thermal decomposition of some acyl(dialkyl)-, dialkyl(allyl)-, dialkyl(benzyl)-, and trialkyl-halogenobis(dimethylphenylphosphine)platinum(IV) complexes

M. P. Brown, R. J. Puddephatt, C. E. E. Upton and S. W. Lavington, J. Chem. Soc., Dalton Trans., 1974, 1613 DOI: 10.1039/DT9740001613

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