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Reactivity of the [η2-bis(tert-butylsulfonyl)acetylene](carbonyl)(η5-cyclopentadienyl)cobalt complex towards electron-rich and -poor ccetylenes

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The electron-rich aminoacetylenes Et2NC2R (2a-c, R = SPh, PPh2, and Ph, respectively) react smoothly with [η2-bis(tert-butylsulfonyl)acetylene](carbonyl)(η5-cyclopentadienyl)co-balt (1) to form the donor-acceptor stabilized (η4-cyclobutadiene)cobalt complexes 3a-c in good yields. However, treatment...

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Bibliographic Details
Main Authors: Goswami, Avijit (Author) , Stäb, Tobias (Author) , Rominger, Frank (Author) , Gleiter, Rolf (Author) , Siebert, Walter (Author)
Format: Article (Journal) Festschrift
Language:English
Published: August 24, 2005
In: European journal of inorganic chemistry
Year: 2005, Issue: 20, Pages: 4086-4089
ISSN:1099-0682
DOI:10.1002/ejic.200500308
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Festschrift
Online Access:Resolving-System, lizenzpflichtig, Volltext: https://doi.org/10.1002/ejic.200500308
Verlag, lizenzpflichtig, Volltext: https://chemistry-europe.onlinelibrary.wiley.com/doi/abs/10.1002/ejic.200500308
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Author Notes:Avijit Goswami, Tobias H. Staeb, Frank Rominger, Rolf Gleiter, and Walter Siebert
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Summary:The electron-rich aminoacetylenes Et2NC2R (2a-c, R = SPh, PPh2, and Ph, respectively) react smoothly with [η2-bis(tert-butylsulfonyl)acetylene](carbonyl)(η5-cyclopentadienyl)co-balt (1) to form the donor-acceptor stabilized (η4-cyclobutadiene)cobalt complexes 3a-c in good yields. However, treatment of the electron-poor borylacetylenes 2d-f with the cobalt complex 1 does not lead to the expected (η4-cyclobutadiene)cobalt complexes. Analogously, the reaction of bis(1-phenylethynyl)sulfide (2g) with two equivalents of 1 gives rise to the sulfur-bridged bis[η4-(cyclobutadiene)cobalt] complex 3g. The new cobalt complexes were characterized by NMR spectroscopy, mass spectrometry, and by X-ray structure analysis for 3a, which reveals almost equal C-C bond lengths within the cyclobutadiene ring. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)
Item Description:Dedicated to Prof. Günter Helmchen on the occasion of his 65th birthday
Im Titel erscheinen die Ziffern 2 und 5 hochgestellt
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Physical Description:Online Resource
ISSN:1099-0682
DOI:10.1002/ejic.200500308

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