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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 119-121 
    ISSN: 0044-2313
    Keywords: Metal hydrides ; crystal structure ; neutron diffraction ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Cs2CaH4, a New Hydride: The Atomic Volume of Hydrogen as a Criterion to Check Crystal Structure and CompositionAccording to the investigations of Park, Pezat, and Darriet CsCaH3 crystallizes in the GdFeO3 structure type. As the resulting atomic volume of hydrogen is too small for a ionic hydride a re-examination of the crystal structure has been carried out. The results of our investigations show that the compound under discussion is actually Cs2CaH4. It crystallizes in the K2NiF4 structure type with the expected atomic volume for hydrogen. The complete crystal structure has successfully been determined by a neutron diffraction experiment on the deuteride Cs2CaD4.
    Notes: Nach Untersuchungen von Park, Pezat und Darriet soil CsCaH3 im GdFeO3-Typ kristallisieren. Anlaß für eine Neuuntersuchung war das für salzartige Hydride wesentlich zu geringe Volumeninkrement des Wasserstoffs in der angegebenen Struktur von CsCaH3. Die Ergebnisse unserer Untersuchungen zeigen, daß es sich um die Verbindung Cs2CaH4 handelt, die im K2NiF4-Typ mit dem für Wasserstoff zu erwartenden Volumeninkrement kristallisiert. Die vollständige Strukturbestimmung gelang über ein Neutronenbeugungsexperiment, bei dem das Deuterid Cs2CaD4 eingesetzt wurde.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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