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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 485 (1982), S. 7-14 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Transition Metal Alkyl Compounds. XXXIII. Preparation and Properties of Ally1 Titanium (IV) Compounds(CH3)4Ti reacts with (CH2=CH—CH2)3B in diethyl ether at -50°C forming solutions of (CH3)3Ti—σ;minus;CH2—CH=CH2 which can be stabilized by 2,2′-bipyridyl in form of an 1:1 complex. Attempts to synthesize tetrallyl titanium failed, but from TiCl4 and CH2—C(CH3)CH2MgCl pure [CH2=C(CH3)CH2]4Ti could be obtained. The compound was characterized by different reactions and the IR and 1H-NMR spectra. Arising the temperature the s̰-allyl structure (-70°C) changes with formation of dynamic allyl systems.Dimethallyl titanium is formed at thermal decomposition of tetramethallyl titanium, which was characterized in detail.
    Notes: (CH3)4Ti reagiert in Diethylether mit (CH2=CH—CH2)3B bei -50°C zu Lösungen des (CH3)3Ti—σ-CH2—CH=CH2, das mit 2,2′-Dipyridyl ein kristallines 1:1-Addukt bildet. Versuche zur Darstellung von Tetraallyltitan schlugen fehl, doch konnte aus TiCl4 und CH2=C(CH3)—CH2MgCl reines [CH2=C(CH3)CH2]4Ti erhalten werden, das durch Reaktionen sowie durch IR- und 1H-NMR-Untersuchungen näher charakterisiert wurde. Bei -70°C liegt eine reine σ-Allyltitanverbindung vor; bei Temperatursteigerung treten dynamische Allylsysteme auf.Beim thermischen Zerfall des Tetramethallyltitans entsteht Dimethallyltitan, [CH2=C(CH3) CH2]2Ti, das näher charakterisiert wurde.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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