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Die Struktur der Komplexnitride NbCrN und Ta1−x Cr1+x N

The crystal structure of the complex nitrides NbCrN and Ta1−x Cr1+x N

  • Anorganische, Struktur- und Physikalische Chemie
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Monatshefte für Chemie - Chemical Monthly Aims and scope Submit manuscript

Abstract

The crystal structure of the isotypic compounds NbCrN and Ta1−x Cr1+x N has been determined from X-ray powder patterns. The tetragonal unit cell contains 12 atoms and belongs to the space group P4bm. The lattice parameters are for NbCrN:a=4.283 Å,c=7.360 Å, for Ta0.8Cr1.2Na=4.249 Å,c=7.334 Å. The structure is characterized by relatively close packed double layers of Nb(Ta)-atoms and Cr-atoms parallel to the base plane. The nitrogen atoms are within the octahedral interstitial sites of the niobium(tantalum) double layer.

Zusammenfassung

Die Kristallstruktur der isotypen Verbindungen NbCrN und Ta1−x Cr1+x N wurde aus Pulverdiagrammen ermittelt. Die tetragonale Elementarzelle enthält 12 Atome, die Raumgruppe ist P4bm. Die Gitterparameter betragen für NbCrN:a=4.283 Å,c=7.360 Å, für Ta0.8Cr1.2N:a=4.249 Å,c=7.334 Å. Die Struktur wird charakterisiert durch relativ dicht gepackte Doppellagen von Niob(Tantal)- und Chrom-Atomen, die parallel zur Basisfläche angeordnet sind. Die Stickstoffatome befinden sich in den Oktaederlücken der Niob(Tantal)-Doppellage.

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Ettmayer, P. Die Struktur der Komplexnitride NbCrN und Ta1−x Cr1+x N. Monatshefte für Chemie 102, 858–863 (1971). https://doi.org/10.1007/BF01167270

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  • DOI: https://doi.org/10.1007/BF01167270

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