Iridium Insertion to Triosmium Cluster Containing Unsaturated Os–Os Bonds
- 54 Downloads
Treatment of the triosmium hydrido cluster, [Os3(μ-H)2(CO)10], with one equivalent of [IrCp*Cl2]2 (Cp* = pentamethylcyclopentadiene) in refluxing THF afforded four osmium–iridium clusters, including [Os3Ir2(μ-CO)(μ-H)2(CO)9(Cp*)2] (1), [Os3IrCp*(μ-H)3(μ-Cl)(CO)9] (2), [Os3IrCp*(μ-H)(μ-Cl)(μ-CO)(CO)9] (3) and [Os2IrCp*(μ-H)(μ-Cl)(CO)7] (4), in moderate yields. The reactivity of complex 3 with hydrogen, carbon monoxide, and thallium hexafluorophosphate was studied. Complex 4 was found to react with [Os3(μ-H)2(CO)10] to give 2 and 3. All of the new compounds were characterized by conventional spectroscopic methods and single-crystal X-ray analysis.
KeywordsOsmium Iridium Clusters Cyclopentadienyl
We gratefully acknowledge the financial support of a Hong Kong Research Grant and the University of Hong Kong. Y.-B. Lee acknowledges the receipt of a postgraduate studentship (2006–2007) administrated by the University of Hong Kong.
- 1.P. Braunstein, L. A. Oro, and P. R. Raithby, Metal Clusters in Chemistry, Vol. II, (Wiley-VCH, Germany, 1999)Google Scholar
- 2.P. Jena, S. N. Khanna, and B. K. Pao, Clusters and Nano-assembles, Physical and Biological Systems (Richmond, Virginia, USA, 2003)Google Scholar