ISSN:
0009-2940
Keywords:
Ruthenium clusters
;
Phosphorus ylides
;
Cluster fragmentation
;
Alkyne coupling
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Ruthenium cluster-Mediated Formation of Carbon Chains from a Phosphorus Ylide and AlkynesThe phosphorus ylide Me3P=CH - C(O)Ph induces fragmentation of Ru3(CO)12 with formation of the dinuclear complex Ru2(CO)7(μ21-HC_… CPh=CH - C(O)Ph) (1a) with a σ,π1-bound allyl ligand, together with its PMe3 derivative 1b. The latter inserts PhC=CPh into the Ru - C s̰ bond to yield two isomeric complexes Ru2(CO)5(PMe3)[μ1-CPh \documentclass{article}\pagestyle{empty}\begin{document}$ \underline \cdots $\end{document} CPh \documentclass{article}\pagestyle{empty}\begin{document}$ \underline \cdots $\end{document} CH - CPh=CH - C(O)Ph] (3a, b) with a (σ,π1-allyl,π1-olefin)1-coordinated six-carbon chain ligand. With HC=CPh 1b undergoes double insertion with formation of the complex Ru2(CO)4(PMe3)(μ1-CH=CPh=CH - CPh=CH - CPh=CH - C(O)Ph] (4) containing an eight-carbon chain ligand with (σ,π1-allyl,π1-olefin,π1-olefin) coordination. The structure of 3a (and thereby indirectly the constitution of 1 and 4) was proved by an X-ray structure determination.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19931260214
