Abstract
The carbyne carbon atom of the metalaalkylidyne compound (η 5 -C 5 H 5 )(CO) 2 Mo≡C- p T ol is readily coupled with the palladated carbon atom of the compound obtained via the ortho -palladation of the benzyl group of the benzyldiphenylphosphine ligand, [2-(C 6 H 4 )CH 2 P(C 6 H 5 ) 2 PdI] 2 , whose Pd-C bond was known to be inert towards insertion reaction of internal alkynes under similar conditions. The resulting heterodimetallic compound has been characterised by a crystal structure analysis. L'atome de carbone carbynique du composé molybdaalkylidyne (η 5 -C 5 H 5 )(CO) 2 Mo≡C- p Tol est rapidement couplé avec le carbone σ lié au palladium du complexe cyclopalladé [2-(C 6 H 4 )CH 2 P(C 6 H 5 ) 2 PdI] 2 , obtenu par la métallation directe du groupe benzyle de la benzyldiphénylphosphine par le palladium(II), alors que ce dernier composé ne conduit pas avec les alcynes internes à une réaction de couplage analogue. La structure du composé hétérobimétallique a été déterminée par une étude de diffraction des rayons X.
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More From: Comptes Rendus de l'Académie des Sciences - Series IIC - Chemistry
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