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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 508 (1984), S. 86-92 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Crystal Structure of (PPh4)2[Mo2Cl10]The title compound is obtained in the reaction of [MoCl4(Ph—C≡C—Ph)]2 with tetraphenylphosphonium chloride in dichloro methane, forming brown crystals. It is characterized by the i.r. spectrum and a crystal structure analysis by the aid of X-ray diffraction data. The complex crystallizes triclinic in the space group P1 with one formula unit per unit cell. The cell dimensions are a = 1122 pm, b = 1137 pm, c = 1283 pm; α = 63.4°, β = 69.1°, γ = 86.5°. The crystal structure determination (2959 observed, independent reflexions, R = 4.5%) shows the constants of the unit cell to consist of on centrosymmetric anion, two cations and one disordered molecule of dichloro methane. The distance Mo—Mo in the anion is 380 pm, which excludes direct magnetic interaction between the molybdenum atoms.
    Notes: Die Titelverbindung entsteht in Form brauner Kristalle durch Umsetzung von [MoCl4(Ph—C≡C—Ph)]2 mit Tetraphenylphosphoniumchlorid in Dichlormethan; sie wird durch das IR-Spektrum und durch eine Kristallstrukturbestimmung charakterisiert. Der Komplex kristallisiert triklin in der Raumgruppe P1 mit einer Formeleinheit pro Elementarzelle. Die Zellparameter betragen a = 1122 pm, b = 1137 pm, c = 1283 pm, α = 63,4°, β = 69,1°, γ = 86,5°. Die röntgenographische Kristallstrukturbestimmung (2959 beobachtete, unabhängige Reflexe, R = 4,5%) zeigt, daß die Struktur aus zentrosymmetrischen, dimeren Anionen, isolierten Kationen, und einem fehlgeordneten Molekül Dichlormethan pro Elementarzelle besteht. Der Mo—Mo-Abstand im Anion beträgt 380 pm, was eine direkte magnetische Wechselwirkung zwischen den Mo-Atomen ausschließt.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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