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  • 1
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Investigation of Inorganie Non-stoichiometric Compounds. XXXIX. X-Ray Structure Analysis and Electronmicroscopical Investigation of MnxNb6(O, F)16The structure of MnxNb6(O, F)16, which is concerning the network of the Nb-X-Polyhedrons (X = O, F) isostructural with LiNb6O15F, was refined to give R = 7.2% and Rw = 2.96%. The resulting formula for the investigated crystal was Mn0.17Nb6O14.34F1.66. Only one of the two possible sites in the canals of the structure is occupied by Mn. The investigation with high resolution electron microscopy yielded pictures which indicate the pentagonal columns as dark contrasts.
    Notes: Die Strukturparameter des Mangannioboxidfluorids MnxNb6(O, F)16, das hinsichtlich des Nb-X-Polyedergerüstes (X = O, F) mit LiNb6O15F isotyp ist, wurden bis zu R = 7,2% bzw. Rw = 2,96% verfeinert. Die Zusammensetzung des untersuchten Kristalls ergab sich zu Mn0,17Nb14,34F1,66. Nur eine der beiden möglichen Lagen in den Kanälen der Struktur ist mit Mn besetzt. Die elektronenmikroskopische Untersuchung ergab hochaufgelöste Abbildungen, die die Nb-X-Polyeder als dunkle Kontraste in der Projektion längs [010] erkennen lassen.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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