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  • Chemistry  (1)
  • IR Spectra
  • Cyano-elpasolites
  • 1975-1979  (1)
  • 1978  (1)
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  • 1975-1979  (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: Structures of Fluorides with Caesium. IV. The Crystal Structure of CsCrF4 - a Novel Tetra-fluorometallate Type with Chain StructureThe crystal structure of the hexagonal compound CsCrF4, crystallizing in space group P62m-D3h3, was determined: a =9.650(5), c = 3.857(3) Å, z = 3, R = 0.023 for 220 symmetrically independent reflections hkl. CsCrF4 is a new type of chain structure, containing three chains of octahedra sharing trans corners along [001] and connected by cis corners to form a triple chain. The bridging angles are Cr—F—Cr = 177.9° and 149.3°, the corresponding distances Cr—F = 1.929 and 1.940 Å, resp., compared to 1.851 Å for the terminal ligands. The results are discussed and relations to other structures shown.
    Notes: Die Kristallstruktur der hexagonal in der Raumgruppe P62,-D3h3 krikristallisierenden Verbindung CsCrF4 wurde bestimmt: a = 9,650(5), c = 3,857(3) Å, V = 311,1 Å3, z = 3, R = 0,023 für 220 symmetrieunabhängige Reflexe hkl. CsCrF4 stellt eine neuen Typ von Kettenstruktur dar, in dem drei längs [001] über trans-Ecken verknüpfte Oktaederketten miteinander über cis-Ecken zu einem Dreierstrang verbunden sind. Die Brückenwinkel betragen Cr—F—Cr 177,9° bzw. 149,3°, die entsprechenden Abstände Cr—F = 1,929 bzw. 1,940 Ä, gegenüber 1,851 Å für die terminalen Liganden. Die Ergebnisse werden diskutiert und Beziehungen zu anderen Strukturen aufgezeigt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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