Transformation of Olefin Complexes into Vinyl Compounds

Platinum(O) haloolefin complexes are transformed into Pt(II) vinyl complexes. This reaction proceeds during heating in nucleophilic solvents such as alcohols, 1,5-COD, and acetonitrile. However, it does not take place in less polar solvents, for example, benzene, acetone, and dichloromethane. The transformation may be induced by SnCl4 or ligands such as CO, SCN , NO, CF3COO . During measurement of ESCA 

Isotope H/D exchange between a coordinated olefin molecule and Dj or rJ 2n may take place as a result of formation of allyl complexes (via hydrogen elimination) or G carbyl complexes, if hydrido compounds are present and allow formation of the metal-alkyl bond by migration of the hydrogen atom to the olefin. 

The H/D exchange within the propene molecule coordinated to Fe, Co, and Ni takes place in the case of C2D4, and does not proceed with The mechanism of 

Migratory insertion reactions involving olefins, that is, reactions of H/D exchange, isomerization, cis-trans isomerization, hydroformylation and other 0x0 syntheses. 

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