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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 442-446 
    ISSN: 0044-2313
    Keywords: Crystal structure ; rare earth manganese carbides ; RE2MnC4 ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Die Carbide RE2MnC4 (RE = Y, Er, Tm) mit Er2FeC4-StrukturDie Titelverbindungen wurden durch Schmelzen kaltgepreßter Pillen der elementaren Komponenten im Lichtbogen dargestellt. Sie kristallisieren mit der rhombischen Er2FeC4-Struktur, die aus Röntgendaten eines Einkristalls von Er2MnC4 verfeinert wurde: Ibam, a = 760,4(1)pm, b = 937,1(1)pm, c = 504,0(1)pm, R = 0,021 für 524 Strukturfaktoren und 17 variable Parameter. Y2MnC4 wird bis zu 1,7 K nicht supraleitend. Die chemische Bindung in diesen Carbiden wird kurz diskutiert.
    Notes: The title compounds were prepared from coldpressed pellets of the elemental components by arcmelting. They crystallize with the orthorhombic Er2FeC4-type structure, which was refined from X-ray data of an Er2MnC4 single crystal: Ibam, a = 760.4(1)pm, b = 937.1(1)pm, c = 504.0(1)pm, R = 0.021 for 524 structure factors and 17 variable parameters. Y2MnC4 does not become superconducting down to 1.7 K. Chemical bonding in these compounds is briefly discussed.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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