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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 117 (1984), S. 376-382 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: (η3-Cycloalkenyl)(η5-cyclopentadienyl)nickel ComplexesReaction of nickelocene (1) with isopropylmagnesium chloride (2) and the five- to eight-membered 1,3-cycloalkdienes 3 - 6 leads to the (η3-cycloalkenyl)(η5-cyclopentadienyl)nickel complexes 7 - 10. Mechanistic investigations of the reaction involving 1,4-cyclohexadiene (11) indicates that the homolytic cleavage of the Ni - C bond in an initially formed (η3-3-cycloalkenyl)-nickel complex occurs faster than isomerization, via β-elimination, to the η3-cycloalkenyl form.
    Notes: Durch Umsetzung von Nickelocen (1) mit Isopropylmagnesiumchlorid (2) und den fünf- bis achtgliedrigen 1,3-Cycloalkadienen 3 - 6 werden die (η3-Cycloalkenyl)(η5-cyclopentadienyl)nickel-Komplexe 7 - 10 erhalten. Aus mechanistischen Untersuchungen mit 1,4-Cyclohexadien (11) folgt, daß die homolytische Spaltung der Ni - C-Bindung in primär gebildeten (η1-3-Cycloalkenyl)nickel-Komplexen rascher als deren Isomerisierung über β-H-Eliminierung zu den η5-Cycloalkenyl-Formen sein muß.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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