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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 117 (1984), S. 3123-3133 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Complexes with Phosphinomethanes and -methanides as Ligands, VIII1). - Iron(0) Complexes with Me2PCH2PMe2-and Me2P[CH2]3PMe2 Ligands: C-H Activation versus PentacoordinationBy reduction of FeCl2 with Mg in the presence of Me2PCH2PMe2 the pentacoordinated iron(0) complex (Me2PCH2PMe2)2FeMe2PCH2PMe2 (5) is obtained. In the presence of Me2P[CH2]3PMe2 the hydridoiron(II) complex 6b is formed. In solution 6b is in equilibrium with its tetracoordinated iron(0) isomer (Me2P[CH2]3PMe2)2Fe (6a) by a reversible intramolecular C-H addition process. This equilibrium is shifted to the iron(0) form by reaction with small molecules (CO, CO2, N2, PR3). 5 and 6 are compared with the analogous PMe3- and Me2P[CH2]2PMe2 iron complexes 1 and 2 with respect to their C,H-activation.
    Notes: Durch Reduktion von FeCl2 mit Mg wird in Gegenwart von Me2PCH2PMe2 der pentakoordinierte Eisen(0)-Komplex (Me2PCH2PMe2)2FeMe2PCH2PMe2 (5), in Gegenwart von Me2P[CH2]3PMe2 der Hydridoeisen(II)-Komplex 6b erhalten, der durch eine reversible intramolekulare C,H-Addition im Lösungsgleichgewicht mit seinem tetrakoordinierten Eisen(0)-Isomeren (Me2P[CH2]3PMe2)2Fe (6a) steht. Durch Reaktion von 6a mit einer Reihe von kleinen Molekülen (CO, CO2, N2, PR3) läßt sich das Gleichgewicht zur Eisen(0)-Stufe verschieben. 5 und 6 werden bezüglich der C,H-Aktivierung mit analogen PMe3- und Me2P[CH2]2PMe2-Eisenkomplexen 1 und 2 verglichen.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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