[Ru4(CO)7(μ-CO)225η2-indenyl)(η5-dihydroindenyl)]: A novel planar cluster with a three-way bridging indenyl ligand

Amihai Eisenstadt, Felix Frolow, Avi Efraty

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The novel tetranuclear planar cluster [Ru4(CO)7(μ-CO)2252-indenyl)(η5-dihydroindenyl)] was prepared by the reaction of indene with Ru3(CO)12 and its structure determined by a single crystal X-ray diffraction study.

Original languageEnglish
Pages (from-to)642-643
Number of pages2
JournalChemical Communications
Issue number11
StatePublished - 1982
Externally publishedYes

Bibliographical note

Funding Information:
Bond distances and angles observed for the indenyl and dihydroindenyl ligands in (2)are quite similar to those reported for bis(~~-indenyl)ruthenium.~The presence of q5-indenyl instead of q5-dihydroindenyl in some of the clusters could explain the greater disorder [rather large, anisotropic tem- perature factors of C(25)-C(28)] observed in the data of the latter ligand. The formation of (2) is also of interest from the standpoint of the chemistry of clusters. The presence of a three-way bridging indenyl in hydrido-containing cluster intermediates suggests intramolecular hydrogen transfer processes during the formation of the q6-dihydroindenyl ligand in (2). More-over, the presence of the [R~(CO),(~~-dihydroindenyl)]unit in (2) suggests the possible role of cluster-extended inter- mediates during the formation of dinuclear products [e.g., (l)] from Ru,(CO),,. This research programme was supported by a grant received from the U.S.A.-Israel Binational Science Founda- tion (B.S.F.). Received, 1Ith March 1982; Corn. 281 References 1 P. McArdle and A. R. Manning, J. Chem. SOC.A, 1970, 2128. 2 M. R. Churchill and R. Bau, Inorg. Chem., 1968, 7, 2606. 3 'Transition Metal Clusters,' ed. B. F. G. Johnson, Wiley,London, 1980. 4 R. Mason and A. 1. M. Rae, J. Chem. SOC.A, 1968, 778. 5 0. S. Mills and J. P. Nice, J. Organomet. Chem., 1967, 9, 339. 6 N. C. Webb and R. E. Marsh, Acta Crystallogr., 1967, 22, 382.


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