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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 462 (1980), S. 49-56 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: New PdxAly Phases and the Compound Pd5AII2The new phases Pd2.4-2.9Al, Pd2.99-3.3Al, and Pd3.8-4.15Al were prepared by synthesis from molten mixtures and subsequent annealing at 600°C, or by reaction in the presence of iodine at 600°C, and were identified by X-ray powder diagrams. In the iodine-containing systems, the same phases resulted from the relation between composition of the gas phase and the structure of the solid reaction component.The existence of Pd5Al3 was confirmed.The new compound Pd5AlI2, the crystal structure of which was determined from a single crystal X-ray analysis, has a tetragonal layer structure with a = 405.2 and c = 1955.9 pm, space group I4/mmm. Iodine layers alternate with ordered Pd/Al slabs. The compound is a metallic conductor with highly preferred conductivity parallel to the layers.
    Notes: Durch Schmelzsynthese und Temperung bei 600°C sowie durch Synthese in Gegenwart von Iod bei 600°C wurden rötgenographisch die neuen Phasen Pd2,4-2,9Al, Pd2,99-3,3Al und Pd3,8-4,15Al gefunden. Die gleichen Phasen ergaben sich im iodhaltigen System aus dem Zusammenhang von Gasphasenzusammensetzung und Bodenkörperstruktur.Die. Existenz von Pd5Al3 wurde bestätigt.Die neue Verbindung Pd5AlI2, deren Kristallstruktur aus Einkristall-Röntgendaten bestimmt wurde, besitzt ein tetragonales Schichtgitter mit a = 405,2 und c = 1955,9 pm, Raumgruppe I4/mmm, in dem Iodschichten und Pd/Al-Schichten miteinander abwechseln. Die Verbindung ist ein metallischer Leiter mit stark bevorzugter Leitfähigkeit in Richtung der Schichten.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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