Reactivity of [Ru3(μ3-NPh)(μ3-CO)(CO)9] towards Activated Alkynes and Diynes − Isolation of a Trinuclear Intermediate During the Formation of Bi- and Tetranuclear Products

✍ Scribed by Javier A. Cabeza; Ignacio del Río; Santiago García-Granda; Marta Moreno; Víctor Riera; María de Jesús Rosales-Hoz; Marta Suárez

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 344 KB
• Volume: 2001
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/1099-0682(200111)2001:11<2899::aid-ejic2899>3.0.co;2-k

✦ Synopsis

Treatment of the trinuclear imido-bridged cluster compound [Ru 3 (µ 3 -NPh)(µ 3 -CO)(CO) 9 ] (1) with activated alkynes (methyl propynoate and methyl phenylpropynoate) and diynes (diphenylbutadiyne, 2,4-hexadiyne, 1,6-diphenyloxy-2,4-hexadiyne, and 1-trimethylsilyl-1,4-pentadiyne) in hexanes at reflux temperature leads to separable mixtures of the tetranuclear and binuclear derivatives [Ru 4 (µ 4 -NPh)(µ 4 ,η 2 -RCϵCRЈ)(µ-CO) 2 (CO) 9 ] and [Ru 2 {µ,η 3 -RC=CRЈC(O)-NPh}(CO) 6 ], respectively. While the former complexes feature a phenylimido ligand in a rather rare µ 4 -coordination mode, the binuclear compounds contain acrylamido ligands that result from the coupling of a CO ligand and the original phenylimido ligand of 1 with the incoming alkyne or diyne. Surprisingly, all the products derived from diynes contain a