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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 120 (1987), S. 471-475 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The synthesis of 7,7-bis(trimethylsilyl)cyclopropabenzene (2) from cyclopropabenzene (1) is reported. The oxidative addition of 2 to tris(ethene)nickel(0) (3) in the presence of chelating ligands occurs with insertion of the nickel atom into the C—C-single bond of the cyclopropabenzene three-membered ring to give nickelacyclobutabenzene derivatives 4, Ligand exchange of the tetramethylethylenediamine in 4a by phosphorus ligands occurs smoothly to give nickelacyclobutabenzene species. 5. - An X-ray structure analysis of 4a was performed.
    Notes: Die Synthese des 7,7-Bis(trimethylsilyl)cyclopropabenzols (2), ausgehend von Cyclopropabenzol (1), wird beschrieben. Die oxidative Addition von 2 an Tris(ethen)nickel(0) (3) in Gegenwart von chelatisierenden Aminliganden liefert unter Insertion der Nickel-atome in eine der C—C-Einfachbindungen des Cyclopropabenzol-Dreiringes Nickelacyclobutabenzole des Typs 4. In einer Ligandenaustauschreaktion läßt sich das Tetramethylethylendiamin im Komplex 4a durch Phosphorliganden glatt unter Bildung von Nickelacyclobutabenzolen des Typs 5 verdrängen. - Von 4a wurde eine Röntgenstrukturanalyse ausgeführt.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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