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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 570 (1989), S. 133-137 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Transmission Electronmicroscopical Investigation of ZnNb14O35F2ZnNb14O35F2 was prepared by heating the mixture ZnF2/Nb2O5 = 1 : 7. The high resolution transmission electronmicroscopical pictures show, that a block structure of monoclinic arranged, edge sharing [3 × 5] blocks exists, which is already known from MgNb14O35F2. The investigated crystal areas have only few defects. The data for the unit cell result from the evaluation of the Guinier diagram: \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm a} = 20.68,{\rm b} = 3.83,{\rm c} = 19.24{\AA},{\rm \beta } = 108.35\deg. $$\end{document}.
    Notes: ZnNb14O35F2 wurde durch Erhitzen des Gemenges ZnF2/Nb2O5 = 1:7 dargestellt. Die durchstrahlungselektronenmikroskopischen Aufnahmen in Hochauflösung zeigen, daß eine Blockstruktur aus monoklin angeordneten, kantenverküpften [3 × 5]-Böcken wie bei MgNb14O35F2 vorliegt, wobei die untersuchten Kristallbereiche nur einen geringen Fehlordnungsgrad aufweisen. Aus der Auswertung des Guinierdiagrammes resultieren für die Elementarzelle die Daten: \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm a} = 20.68,{\rm b} = 3.83,{\rm c} = 19.24{\AA},{\rm \beta } = 108.35\deg $$\end{document}.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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