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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 48-52 
    ISSN: 0044-2313
    Keywords: Alkali bismuth gold oxide ; preparation ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Crystal Structure of NaBi2AuO5NaBi2AuO5 was obtained by hydrothermal reaction of ‘Bi2O5’, Au2O3 · 2H2O and saturated aqueous NaOH solution at temperatures from 300 to 600°C and oxygen pressure from 3 × 108 to 6 × 108 Pa for the first time. The crystal structure (P4b2; a = 1 220.02(6) pm; b = 386.68(3) pm; Z = 4; Rw = 0.022) consists of bisphenoidic distorted AuO4 groups, which are stacked in c-direction. They are connected by square pyramidal BiO5 units. Sodium is occupying holes within the Au/Bi/O framework thus formed.
    Notes: NaBi2AuO5 wurde durch Hydrothermalreaktion aus ‘Bi2O5’, Au2O3 · 2H2O und ges. wäßriger NaOH bei Temperaturen von 300 bis 600°C und Sauerstoffdrucken von 3 · 108 bis 6 · 108 Pa erstmals dargestellt. Nach den Ergebnissen der Röntgenstrukturanalyse (P4b2, a = 1 220,02(6); b = 386,68(3) pm; Z = 4; Rw = 0,022) liegen bisphenoidisch verzerrte AuO4-Gruppen vor, die in c-Richtung gestapelt sind. Die Verknüpfung erfolgt über quadratisch pyramidale BiO5-Baueinheiten. In dieser Raumnetzstruktur besetzt Natrium die vorhandenen Lücken.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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