The formation of σ-phenylethynyl and σ-diphenylbutenynyl complexes in the reaction of σ-alkenyl ruthenium(II) complexes with phenylacetylene. The X-ray structure of a ruthenium(II) complex containing a σ-phenylethynyl ligand

Mohammed El Guaouzi, Ramón Yáñez, Josep Ros, Ángel Alvarez-Larena, Joan F. Piniella

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Resumen

Ruthenium(II) complexes containing both σ-alkenyl and η2-carboxylate ligands Ru(O2CR2)(CHCHR1)(CO)(PPh3) 2 (R1=tBu, Ph; R2=CH=CHCH=CHCH3) react with phenylacetylene in two stages. Their reaction with an equivalent amount of the alkyne led to the formation of a σ-alkynyl-containing ruthenium(II) complex Ru(O2CR2)(CCPh)(CO)(PPh3)2 (R2=CH=CHCH=CHCH3), the molecular structure of which was established by X-ray diffraction. This σ-alkynyl complex then reacts with phenylacetylene to form a σ-butenynyl-containing compound Ru(O2CR2)(C(CCPh)=CPhH)(CO)(PPh3)2 (R2=CH=CHCH=CHCH3). Both reactions support the key role of alkynyl ligands in the dimerization of alkynes.
Idioma originalInglés
Páginas (desde-hasta)288-291
PublicaciónInorganic Chemistry Communications
Volumen2
N.º7
DOI
EstadoPublicada - 1 jul 1999

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