Reactivity of carboxylate complexes of platinum(II) towards carbon monoxide, sulphur dioxide, and some olefins and acetylenes
- 1 January 1972
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 14,p. 1436-1439
- https://doi.org/10.1039/dt9720001436
Abstract
Reactions of the carboxylate complexes Pt(OCOCH3)2(PPh3)2 and Pt(OCOCF3)2(PPh3)2 with carbon monoxide and certain olefins and acetyienes in alcoholic media support a mechanism which involves the formation of an intermediate alkoxide complex, Pt(OCOCY3)(OR)(PPh3)2(Y = H or F; R = Me or Et). The alkoxide reacts with carbon monoxide to give alkoxycarbonyl complexes, Pt(OCOCY3)(COOR)(PPh3)2 but in the presence of diphenylacetylene a hydride shift occurs to give a platinum hydride species which results in the formation of an alkenyl complex, Pt(OCOCF3)(PhCCHPh)(PPh3)2 when Y = F and Pt(PhCCPh)(PPh3)2 when Y = H. Reactions with hexafluorobut-2-yne, tetrafluoroethylene, tetrachloroethylene, and tetracyanoethylene are also described. Sulphur dioxide reacts with Pt(OCOCH3)2(PPh3)2 in methanol to give the methylsulphonate complex, Pt(SO2OMe)2(PPh3)2.Keywords
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