Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.jorganchem.2005.09.007
Title: The synthesis of heteronuclear clusters containing cyclopentadienyl- or pentamethylcyclopentadienyliridium and ruthenium or osmium
Authors: Srinivasan, P.
Leong, W.K. 
Keywords: Cluster
Cyclopentadienyl
Fluxional
Heteronuclear
Iridium
Osmium
Ruthenium
Issue Date: 15-Jan-2006
Citation: Srinivasan, P., Leong, W.K. (2006-01-15). The synthesis of heteronuclear clusters containing cyclopentadienyl- or pentamethylcyclopentadienyliridium and ruthenium or osmium. Journal of Organometallic Chemistry 691 (3) : 403-412. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jorganchem.2005.09.007
Abstract: The reaction of Cp*Ir(CO)2 or CpIr(CO)2 with Ru3(CO)12 under a hydrogen atmosphere afforded the heterometallic clusters Cp*IrRu3(μ-H)2(CO) 10 and CpIrRu3(μ-H)2(CO)10, respectively, in moderate yields. In the former reaction, the tetrahydrido cluster Cp*IrRu3(μ-H)4(CO)9 was also formed in trace amounts, although this cluster can be obtained in high yields by the hydrogenation of Cp*IrRu3(μ-H)2(CO) 10; the Cp analogue was not obtainable. The reaction of Os 3(μ-H)2(CO)10 with Cp*Ir(CO) 2 afforded the osmium analogue Cp*IrOs3(μ-H) 2(CO)10 in 70% yield, along with a trace amount of the pentanuclear cluster Cp*IrOs4(μ-H)2(CO) 13. Hydrogenation of Cp*IrOs3(μ-H) 2(CO)10 afforded Cp*IrOs3(μ-H) 4(CO)9 in excellent yield. The reaction of Cp*Ir(CO)2 with Os3(CO)10(CH 3CN)2 afforded the known trinuclear cluster Cp*IrOs2(CO)9 and the novel cluster Cp*IrOs3(CO)11. Solution-state NMR studies show that the hydrides in the iridium-ruthenium clusters are highly fluxional even at low temperatures while those in the iridium-osmium clusters are less so.
Source Title: Journal of Organometallic Chemistry
URI: http://scholarbank.nus.edu.sg/handle/10635/95268
ISSN: 0022328X
DOI: 10.1016/j.jorganchem.2005.09.007
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