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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 573 (1989), S. 19-23 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: About an Oxotantalate with Partly Ordered Corundum-Structure: Mn0.6Mg3.4Ta2O9In the system of mixed crystals of the composition Mn4-xMgxTa2O9 single crystals with x = 3.4 were examined by X-ray methods (space group D43d-P3c1; a = 5.2141; c = 14.178 Å; Z = 2). The point positions of the divalent metals are occupied in an ordered manner. Order and disorder are discussed in respect to Mn2Zn2Nb2O9, Mn3ZnNb2O9, and oxotantalates (MM′)4Ta2O9 [M, M′ = Zn, Ni, Mg].
    Notes: Im System Mn4-xMgxTa2O6 wurden Einkristalle für x = 3,4 mit Röntgenbeugung untersucht (Raumgruppe D43d-P3c1, a = 5,2141; c = 14,178 Å, Z = 2). Mn2+ und Mg2+ besetzen die entsprechenden Metallpunktlagen partiell geordnet. Der Grad der Ordnung wird im Vergleich zu Mn2Zn2Nb2O9, Mn3ZnNb2O9 und den Oxotantalaten (MM′)4Ta2O9 [M, M′ = Zn, Ni, Mg] diskutiert.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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