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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 609 (1992), S. 51-54 
    ISSN: 0044-2313
    Keywords: Titanium ; chromium ; niobium ; tantalum ; oxide ; structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A Contribution on Ternary Oxides of the AMO4-Type (A = Ti3+, Cr3+; M = Nb5+, Ta5+)CrNbO4, CrTaO4, TiNbO4, and TiTaO4 were prepared by CO2-laser technique. X-ray single crystal investigations show a random distribution of the metal ions in Rutil type structure, space group D4h14-P42/mnm. Calculations of the free energy of reaction between Ti2O3 and Nb2O5 show higher stability of TiO2 beside NbO2. In TiNbO4 both metals exhibit the oxidation state +4.
    Notes: CrNbO4, CrTaO4 TiNbO4 und TiTaO4 wurden einkristallin mit CO2-Lasertechnik dargestellt und röntgenographisch untersucht. Sie kristallisieren mit statistischer Verteilung der Metallionen im Rutiltyp, Raumgruppe D4h14-P42/mnm. Berechnungen der freien Reaktionsenthalpie zeigen, daß Ti2O3 nicht neben Nb2O5vorliegt. In TiNbO4 haben beide Metallionen die Oxidationsstufe +4.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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