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The Novel Cyclodimerization of Phenylacetylene at a Ruthenium(II) Centre. The Synthesis and X-Ray Structural Characterization of the First Metallacyclopentatriene, , and its Facile Conversion into Metallacyclopentadienes

DOI: 10.1039/c39860001680

Source and publish data:

Journal of the Chemical Society. Chemical communications p. 1680 - 1682 (1986)

Update date:2022-08-05

Topics:

Authors:

Albers, Michel O.Albers, Michel O.

Waal, Dirk J. A. deWaal, Dirk J. A. de

Liles, David C.Liles, David C.

Robinson, David J.Robinson, David J.

Singleton, EricSingleton, Eric

Wiege, Manfred B.Wiege, Manfred B.

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Article abstract of DOI:10.1039/c39860001680

Cyclodimerization of two molecules of phenylacetylene at the ruthenium(II) centre in <(η-C5H5)Ru(η-C8H12)Br> (C8H12 = cyclo-octa-1,5-diene) gives the novel ruthenacyclopentatriene <(η-C4H5)Ru(C4Ph2H2)Br> characterized by 1H and 13H n.m.r. spectroscopy and by X-ray analysis; the triene undergoes facile 'oxidative addition' with donor ligands L (e.g. morpholine, trimethyl phosphite, dimethylphenylphosphine) in a bimolecular reaction involving an associative mode of activation to give the ruthenacyclopentadienes <(η-C5H5)Ru(L)C4Ph2H2)Br>.

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Product name:Ru(4+)*C5H5(1-)*HN(CH2CH2)2O*C4(C6H5)2H2(2-)*Br(1-)=((C5H5)Ru(HN(CH2CH2)2O)(C4(C6H5)2H2)Br)

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