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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 617 (1992), S. 19-22 
    ISSN: 0044-2313
    Keywords: Sodium ; barium ; copper ; oxide ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The first Alkaline Alkaline-Earth Oxocuprate (II, III): NaBa2Cu22+Cu3+O6The compound NaBa2Cu3O6 was prepared by heating of Na2O2, BaO2, Cu2O in closed Ag-tubes. X-ray single crystal investigations led to orthorhombic symmetry, space group D2h23-Fmmm; a = 8.4229; b = 11.4418; c = 14.4063 Å; Z = 8. Cu2+ and Cu3+ show square planar polygones of four and Na+ trigonal prisms of six O2-. The two barium point positions show coordination numbers C.N. = 8 and 6 + 4. The crystal structure is discussed.
    Notes: Die Verbindung NaBa2Cu3O6 wurde durch Reaktion von Na2O2, BaO2, Cu2O in geschlossenen Silberrohren erstmals dargestellt. An Einkristallen wurde die Kristallstruktur röntgenographisch aufgeklärt. NaBa2Cu3O6 Kristallisiert orthorhombisch, Raumgruppe D2h23-Fmmm mit a = 8,4229; b = 11,4418; c = 14,4063 Å; Z = 8. Cu2+ bzw. Cu3+ sind quadratisch planar von vier O2-, Na+ trigonal prismatisch von sechs O2- koordiniert. Es gibt zwei verschiedene Ba/O-Polyeder mit den Koordinationszahlen C.N. = 8 und 6 + 4. Die Kristallstruktur wird vorgestellt und diskutiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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