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  • 1
    ISSN: 0044-2313
    Keywords: Rare Earth Halides ; Crystal Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A Structural Variant to the NaErCl4/α-NiWO4 Type for Ternary Rare-Earth Halides NaMCl4: Synthesis and Crystal Structure of NaLuCl4Single crystals of NaLuCl4 (orthorhombic, Pbcn (Nr. 60), Z = 4, a = 618.6(1) pm, b = 1 592.2(2) pm, c = 657.0(1) pm) were grown for the first time from the binary components using the Bridgman technique. The crystal structure may be derived from a hexagonally closest packing of Cl- spheres with one half of all octahedral sites occupied by the cations Na+ and Lu3+, respectively. The close relation of the structure to that of NaErCl4 (α-NiWO4) is discussed. NaScCl4 was found to be isotypic to NaLuCl4.
    Notes: Einkristalle von NaLuCl4 (orthorhombisch, Pbcn (Nr. 60), Z = 4, a = 618,6(1) pm, b = 1 592,2(2) pm, c = 657,0(1) pm) wurden erstmals nach dem Bridgman-Verfahren aus den binären Komponenten gezüchtet. Die Kristallstruktur läßt sich von einer hexagonal-dichtesten Kugelpackung von Cl--Ionen ableiten, in der die Hälfte aller Oktaederlücken mit den Kationen Na+ bzw. Lu3+ besetzt ist. Die enge Verwandtschaft der Struktur mit jener von NaErCl4 (α-NiWO4) wird diskutiert. Mit NaScCl4 konnte ein zweiter Vertreter dieses Strukturtyps dargestellt werden.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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