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Die Kristallstruktur von W2CoB2 und isotypen Phasen

  • Inorganic, Structurai and Physical Chemistry
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Zusammenfassung

Die Phasen Mo2CoB2, Mo2NiB2, W2FeB2, W2CoB2 und W2NiB2 kristallisieren in einem neuen Typ (W2CoB2-Struktur). Die Zelle ist orthorhombisch, die Raumgruppe D 252h -I mmm. Die Punktlagen sind 4 W in 4 f), 2 Co in 2 a) und 4 B in 4 h). Die strukturellen Bauelemente werden mit jenen von Mo2FeB2 (U3Si2-Typ) verglichen.

Abstract

The ternary compounds Mo2CoB2, Mo2NiB2, W2FeB2, W2CoB2 and W2NiB2 crystallize with a new type (W2CoB2-structure). The elementary cell is orthorhombic, the space group being D 252h -I mmmm. The atomic positions are determined to be 4 W in 4 f), 2 Co in 2 a) and 4 B in 4 h). Both crystal structures W2CoB2 and Mo2FeB2 (U3Si2-type) are compared with respect to the trigonal prismatic surrounding of the boron atoms.

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Rieger, W., Nowotny, H. & Benesovsky, F. Die Kristallstruktur von W2CoB2 und isotypen Phasen. Monatshefte für Chemie 97, 378–382 (1966). https://doi.org/10.1007/BF00905254

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  • DOI: https://doi.org/10.1007/BF00905254

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