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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 565 (1988), S. 41-46 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Syntheses, I.R. and 15N N.M.R. Spectra of 15N-labelled Nitrido Complexes of TungstenThe IR and 15N N.M.R. spectra of the tungsten nitrido complexes PPh4[W(15N)Cl4] with terminal ligands, [W(15N)Cl3 · CH3CN]4 and of the binuclear complexes [W2(15N)CI9 · CH3CN] and PPh4[W2(15N)Cl10] with the μ-nitrido ligands are reported. Downfield shifts on the order of 211 to 258 ppm (relative to nitromethane) are observed. New procedures were developed for the syntheses of the 15N-labelled compounds: W2(15N)Cl9 was obtained from WCl6 and the bromide of Millon's base, [Hg2(15N)]Br; W(15N)Cl3 by thermolysis of W2(15N)Cl9 and PPh4[W2(15N)Cl10] from PPh4[W(15N)Cl4] and tungsten hexachloride.
    Notes: Es wird über die IR- und die 15N-Kernresonanzspektren der Nitridokomplexe des Wolframs PPh4[W(15N)CI4] mit terminalem Liganden sowie [W(15N)Cl3 · CH3CN]4 und der zweikernigen Komplexe [W2(15N)Cl9 · CH3CN] und PPh4[W2(15N)CI10] mit dem μ-Nitridoliganden berichtet.Es werden Tieffeldverschiebungen im Bereich von 211 bis 258 ppm (relativ zu Nitromethan) beobachtet. Für die Synthesen der 15N-markierten Präparate wurden neue Verfahren entwickelt: W2(15N)Cl9 wurde aus WCI6 und dem Bromid der Millonschen Base, [Hg2(15N)]Br, erhalten, W(15N)Cl3 durch Thermolyse von W2(15N)Cl9 und PPh4[W2(15N)Cl10] aus PPh4[W(15N)Cl4] und Wolframhexachlorid.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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