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  Novel Ni(0)-COT Complexes, Displaying Semiaromatic Planar COT Ligands with Alternating C−C and C=C Bonds

Bach, I., Pörschke, K.-R., Proft, B., Goddard, R., Kopiske, C., Krüger, C., et al. (1997). Novel Ni(0)-COT Complexes, Displaying Semiaromatic Planar COT Ligands with Alternating C−C and C=C Bonds. Journal of the American Chemical Society, 119(16), 3773-3781. doi:10.1021/ja964210g.

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 Creators:
Bach, Ingrid1, Author
Pörschke, Klaus-Richard2, Author           
Proft, Bernd1, Author
Goddard, Richard3, Author           
Kopiske, Carsten4, Author           
Krüger, Carl4, Author           
Rufinska, Anna5, Author           
Seevogel, Klaus1, Author
Affiliations:
1Max-Planck-Institut für Kohlenforschung, Max Planck Society, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, DE, ou_1445580              
2Research Group Pörschke, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445616              
3Service Department Lehmann (EMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445625              
4Service Department Krüger (XRAY), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445624              
5Service Department Farès (NMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445623              

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Free keywords: TRANSITION-METAL-COMPLEXES; CYCLOOCTATETRAENE; SPECTROSCOPY; GEOMETRY; RING
 Abstract: Reaction of (R2PC2H4PR2)Ni(C2H4) with COT gives the mononuclear complexes (R2PC2H4PR2)Ni(η2-C8H8) (R = iPr 1a, tBu 1b). The COT ligand in 1a,b is planar with alternating C−C and C=C bonds, corresponding to a formal semiaromatic [C8H8]- ligand. Reactions of 1a with (iPr2PC2H4PiPr2)Ni(η22-C6H10) and of 1b with stoichiometric amounts of {(tBu2PC2H4PtBu2)Ni}2(μ-C6H6) or lithium afford the dinuclear complexes {(iPr2PC2H4PiPr2)Ni}2{μ-η4(1,2,5,6):η4(3,4,7,8)-C8H8} (2a) and {(tBu2PC2H4PtBu2)Ni}2(μ-η22-C8H8) (2b; two isomers). The COT ligand in 2a is tub-shaped and olefinic, whereas in 2b (as in 1a,b) it is planar and semiaromatic. The products are characterized by IR, solution and solid-state NMR spectroscopy, and by X-ray structure analysis.

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Language(s): eng - English
 Dates: 1996-12-061997-04-231997-04-23
 Publication Status: Published in print
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/ja964210g
 Degree: -

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Title: Journal of the American Chemical Society
  Other : J. Am. Chem. Soc.
  Abbreviation : JACS
Source Genre: Journal
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Publ. Info: Washington, USA : American Chemical Society
Pages: - Volume / Issue: 119 (16) Sequence Number: - Start / End Page: 3773 - 3781 Identifier: ISSN: 0002-7863
CoNE: https://pure.mpg.de/cone/journals/resource/954925376870