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  • 1
    ISSN: 0044-2313
    Keywords: Triphenylarsin-p-toluene sulfonylimine ; Zirconium tetrachloride complex ; Crystal Structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Crystal Structures of Triphenylarsin-p-toluene Sulfonylimine and of its Donor-Acceptor Complex [ZrCl4(Ph3AsNSO2Tol)]2The molecular structures of the title compounds are reported. In the donor-acceptor complex [ZrCl4(Ph3AsNSO2Tol)]2 the zirconium atoms are bridged by the oxygen atoms of the triphenylarsin-p-toluene sulfonylimine molecules, forming a centrosymmetric dimer with a puckered Zr2O4S2 eight-membered ring in the chair conformation.Ph3AsNSO2Tol: Space group P1, Z = 2, structure determination with 4 010 observed unique reflections, R = 0.036. Lattice dimensions at 19°C: a = 897.52(4), b = 1 071.82(6), c = 1 337,49(5) pm, α = 110.280(4)°, β = 98.814(4)°, γ = 109.872(4)°.[ZrCl4(Ph3AsNSO2Tol)]2: Space group P21/n, Z = 4, structure determination with 3 762 observed unique reflections, R = 0.078. Lattice dimensions at -60°C: a = 1 387.3(4), b = 1 434.9(2), c = 1 404.7(4) pm, β = 92.71(1)°.
    Notes: Es wird über die Molekülstrukturen der beiden Titelverbindungen berichtet. In dem Donor-Akzeptorkomplex [ZrCl4(Ph3AsNSO2Tol)]2 sind die Zirkoniumatome über die O-Atome der Triphenylarsin-p-toluolsulfonylimin-Moleküle zu einem zentrosymmetrischen Dimer mit einem Zr2O4S2-Achtring in der Sesselkonformation verknüpft.Ph3AsNSO2Tol: Raumgruppe P1, Z = 2, Strukturlösung mit 4 010 unabhängigen beobachteten Reflexen, R = 0,036. Gitterkonstanten bei 19°C: a = 897,52(4), b = 1 071,82(6), c = 1 337,49(5) pm, α = 110,280(4)°, β = 98,814(4)°, γ = 109,872(4)°.[ZrCl4(Ph3AsNSO2Tol)]2: Raumgruppe P21/n, Z = 4, Strukturlösung mit 3 762 unabhängigen beobachteten Reflexen, R = 0,078. Gitterkonstanten bei -60°C: a = 1 387,3(4), b = 1 434,9(2), c = 1 404,7(4) pm, β = 92,71(1)°.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 20 (1981), S. 413-426 
    ISSN: 0570-0833
    Keywords: Multiple bonds ; Bond theory ; Nitrido ligand ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Numerous nitrido complexes of transition metals show very short metal-nitrogen bond lengths, suggesting M≡N-triple bonds. At present, compounds of this type are being intensively investigated. In particular the molybdenum complexes are considered as model substances for the study of at least an intermediate step of N2-assimilation. This article contains a review of the structure and bonding, as well as syntheses and reactions of these complexes.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
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