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Iridium Insertion to Triosmium Cluster Containing Unsaturated Os–Os Bonds

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Abstract

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.

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Acknowledgements

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.

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Authors and Affiliations

  1. Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, P.R. China

    Yui-Bing Lee & Wing-Tak Wong

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  1. Yui-Bing Lee
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  2. Wing-Tak Wong
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Correspondence to Wing-Tak Wong.

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This work is dedicated to Professor Frank Albert Cotton for his pioneering contributions to the chemistry of metal clusters

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Lee, YB., Wong, WT. Iridium Insertion to Triosmium Cluster Containing Unsaturated Os–Os Bonds. J Clust Sci 19, 133–145 (2008). https://doi.org/10.1007/s10876-007-0159-0

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