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  • 1985-1989  (1)
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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: Na5AlF2(PO4)2: Synthesis, Crystal Structure and Ionic ConductivityTwo different procedures (precipitation from aqueous solution and solid state reaction) for the synthesis of hitherto unknown Na5AlF2(PO4)2 were optimized. The crystal structure was determined using diffractometer data (P3, a = b = 10.483(1), c = 6.607(1) Å, MoKα, 1080 independent reflections, Rw = 0.025). PO4-tetrahedra and AlO4F2-“octahedra” are connected via common vertices forming a twodimensionally extended heteropolyanion. Sodium is located in interconnected spacings of the [AlF2(PO4)2]-part of the structure. Ionic conductivity as expected because of these structural features was affirmed experimentally.
    Notes: Zwei unabhängige Verfahren (Fällung aus wäßriger Lösung und Festkörperreaktion) zur Darstellung vom vorher unbekannten Na5AlF2(PO4)2 wurden optimiert. Die Kristallstruktur wurde mit Diffraktometerdaten aufgeklärt (P3, a = b = 10,483(1), c = 6,607(1) Å, MoKα, 1080 unabhängige Reflexe, Rw = 0,025). PO4-Tetraeder und AlO4F2-„Oktaeder“ sind über gemeinsame Ecken zu einem zweidimensional ausgedehnten Heteropolyanion verknüpft. Natrium befindet sich in miteinander verbundenen Röhren des [AlF2(PO4)2]-Teils der Struktur. Die aufgrund der Strukturmerkmale zu erwartende Natriumionenleitfähigkeit wird experimentell bestätigt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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