Journalartikel

X-ray single crystal and electron microscopic investigations on a new uranium niobate:: γ-UNbO5


Autorenliste: Schleifer, M; Busch, J; Gruehn, R

Jahr der Veröffentlichung: 1999

Seiten: 1985-1990

Zeitschrift: Journal of Inorganic and General Chemistry

Bandnummer: 625

Heftnummer: 12

ISSN: 0044-2313

Verlag: Wiley


Abstract: 
Black cuboid formed crystals of gamma-UNbO5 were obtained (at T-1) by chemical transport in a temperature gradient (T-2 --> T-1; 1000 degrees C --> 980 degrees C) using UNb2O7 as starting material (at T-2) and a combination of NbCl5 and Cl-2 as transport agent. They were examined by X-rays and electron microscopy. The new modification of gamma-UNbO5 crystallizes orthorhombically (space group mma) with a = 7.492(3) Angstrom, b = 4.124(4) Angstrom and c = 6.434(4) Angstrom. The compound is isostructural to UVO5 and UMoO5. The crystal structure shows parallel layers formed by edge sharing UO7 and NbO6 polyhedra. Polyhedra of neighbouring layers (distance = b) are mutually corner linked.



Zitierstile

Harvard-Zitierstil: Schleifer, M., Busch, J. and Gruehn, R. (1999) X-ray single crystal and electron microscopic investigations on a new uranium niobate:: γ-UNbO5, Zeitschrift für anorganische und allgemeine Chemie = Journal of Inorganic and General Chemistry, 625(12), pp. 1985-1990. https://doi.org/10.1002/(SICI)1521-3749(199912)625:12<1985::AID-ZAAC1985>3.0.CO;2-D

APA-Zitierstil: Schleifer, M., Busch, J., & Gruehn, R. (1999). X-ray single crystal and electron microscopic investigations on a new uranium niobate:: γ-UNbO5. Zeitschrift für anorganische und allgemeine Chemie = Journal of Inorganic and General Chemistry. 625(12), 1985-1990. https://doi.org/10.1002/(SICI)1521-3749(199912)625:12<1985::AID-ZAAC1985>3.0.CO;2-D


Schlagwörter

chemical transport; gamma-UNbO5; POWDER NEUTRON-DIFFRACTION; VANADIUM-OXIDES

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