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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 387 (1972), S. 161-178 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The results of X-ray single crystal work on RbNiCrF6 (a = 10.21 Å) and of powder work on KNiCrF6 (a = 10.24 Å) and KNiCrF6 · H2O (a = 10.45 Å) are reported. All three compounds crystallize cubically in the space group Fd3m. They contain a network M2X6 of octahedra, analogous to that of the pyrochlores and with distances Ni-F = Cr-F = = 1.93 ± 0.02 Å which are equal within the error of determination. The structural relations between the three compounds, and compared with the pyrochlore structure are discussed, as well as the relations to the tetragonal bronze-type structure occuring as a high pressure phase of KNiCrF6.
    Notes: Die Ergebnisse einer Einkristallstrukturbestimmung an RbNiCrF6(a = 10,21 Å) und von Pulvermessungen an KNiCrF6 (a = 10,24 Å) und KNiCrF6 · H2O (a = 10,45 Å) werden mitgeteilt. Alle drei Verbindungen kristallisieren kubisch in der Raumgruppe Fd3m und enthalten ein den Pyrochloren analoges Oktaedernetz M2X6 mit innerhalb der Fehlergrenze gleichen Abständen Ni-F = Cr-F = 1,93 ± 0,02 Å. Die strukturellen Beziehungen der drei Verbindungen untereinander und zur Pyrochlorstruktur werden diskutiert, ebenso zur tetragonalen Bronzestruktur, die als Hochdruckphase von KNiCrF6 auftritt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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