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The role of [η2-bis(tert-butylsulfonyl)acetylene](carbonyl)(η5-cyclopentadienyl)cobalt(I) as an intermediate in the alkyne dimerisation

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Dicarbonyl(η5-cyclopentadienyl)cobalt(I) (1) reacts with the electron-poor alkyne bis(tert-butylsulfonyl)acetylene to give the corresponding cyclobutadiene complex 6, whereas the reaction of [CpCo(CO)2] with dimethyl acetylenedicarboxylate yields the cyclopentadienone complex 7 under the same condit...

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Bibliographic Details
Main Authors: Stäb, Tobias (Author) , Chávez, Jorge A. (Author) , Gleiter, Rolf (Author) , Nuber, Bernhard (Author)
Format: Article (Journal) Festschrift
Language:English
Published: September 8, 2005
In: European journal of inorganic chemistry
Year: 2005, Issue: 20, Pages: 4090-4093
ISSN:1099-0682
DOI:10.1002/ejic.200500394
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Festschrift
Online Access:Resolving-System, lizenzpflichtig, Volltext: https://doi.org/10.1002/ejic.200500394
Verlag, lizenzpflichtig, Volltext: https://chemistry-europe.onlinelibrary.wiley.com/doi/abs/10.1002/ejic.200500394
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Author Notes:Tobias H. Staeb, Jorge Chávez, Rolf Gleiter, and Bernhard Nuber
Description
Summary:Dicarbonyl(η5-cyclopentadienyl)cobalt(I) (1) reacts with the electron-poor alkyne bis(tert-butylsulfonyl)acetylene to give the corresponding cyclobutadiene complex 6, whereas the reaction of [CpCo(CO)2] with dimethyl acetylenedicarboxylate yields the cyclopentadienone complex 7 under the same conditions. The cyclobutadiene complex 6 could not be obtained by the treatment of [η2-bis(tert-butylsulfonyl)acetylene](carbonyl)(η5-cyclopentadienyl)cobalt(I) [3(H)] with an excess of bis(tert-butylsulfonyl)acetylene. The same holds for the treatment of 3(H) with dimethyl acetylenedicarboxylate and bis(catecholatoboryl)acetylene. With these results we assume that the monoalkyne complex 3(H) is not an intermediate in the alkyne oligomerisation of electron-poor alkynes, as was shown for electron-rich ones. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)
Item Description:Dedicated to Prof. Dr. Günter Helmchen on the occasion of his 65th birthday
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Physical Description:Online Resource
ISSN:1099-0682
DOI:10.1002/ejic.200500394

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