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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 309-312 
    ISSN: 0044-2313
    Keywords: Barium vanadium oxide fluoride ; synthesis ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Kristallstruktur eines neuen azentrischen Oxidfluorids des VIV: BaVOF4Die Struktur von BaVOF4, erhalten durch hydrothermale Synthese, wurde röntgendiffraktometrisch aus Einkristalldaten bestimmt: Raumgruppe Fdd2 (azentrisch), Z = 16, a = 7,920(1), b = 27,608(2), c = 7,375(1) Å mit R = 0,0262, Rw = 0,0273 für 1 508 unabhängige Reflexe und 64 Parameter. Das Gitter wird von cis-verknüpften VOF5-Oktaedern aus gewinkelten unendlichen Ketten entlang [101] und [101] gebildet, die über Barium-Kationen verbunden sind. Die Lage der O2- und F- wird mittels Valenzband-Rechnungen diskutiert. Wie für BaTiOF4 und einige Verbindungen aus der Reihe AIIMIIIF5 (A = Ba, Sr und M = Ga, Al, Mn) kann die Struktur durch quasi-hexagonal dichteste Ebenen aus Stapeln von Ba2+, O2-- und F--Ionen beschrieben werden.
    Notes: The structure of BaVOF4 has been determined by X-ray diffraction data from a single crystal obtained by hydrothermal synthesis: S.G. Fdd2 (acentric), Z = 16, a = 7.920(1), b = 27.608(2) and c = 7.375(1) Å with R = 0.0262 and Rw = 0.0273 for 1 508 independent reflections and 64 parameters. The network is built up from cis-linked VOF5 octahedra forming infinite kinked chains running along the [101] and [101] directions, connected by barium cations. The location of O2- and F- ions is discussed using bond valence calculations. As for BaTiOF4 and some compounds in the series AIIMIIIF5 (A = Ba, Sr and M = Ga, Al, Mn), the structure can be described in terms of a quasi hexagonal compact planes stacking of Ba2+, O2- and F- ions.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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