Mixed oxides of the system MV-TeIV-O2 (M= Nb, Ta, Sb); II. crystal structure of Ta2Te2O9

descriptionPublicationkeyboard_double_arrow_right Article 01 Oct 1987 English Publisher:Elsevier BVJournal:Materials Research Bulletin, volume 22, pages 1,405-1,412 (issn: 0025-5408,

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Authors: Martínez Carrera, Sagrario; Sanz-Aparicio, J.; Pico, C.; Gaitán, M.; Jerez, A.; Veiga, M. L.;

doi: 10.1016/0025-5408(87)90305-9

handle: 10261/248280

Mixed oxides of the system MV-TeIV-O2 (M= Nb, Ta, Sb); II. crystal structure of Ta2Te2O9

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Abstract

Single crystals of a TaV and TeIV mixed oxide of composition Ta2Te2O9 have been obtained by transport reaction of TeO3 and Ta2O5 at 700°C. The crystal structure of this material has been determined by single crystal X-ray diffraction technique. The compound has monoclinic symmetry (S.G. P21/c) with lattice parameters: a= 7.096(3), b= 7.486(3), and c= 14.614(3) ȧ, β = 103.010(36)°. R= 0.047 for 1974 observed reflexions. The structure is discussed on the basis of the coordination polyhedra of the central atoms and the effect of the “lone pair” characteristic of TeIV. The authors would like to acknowledge the financial support of the Comisión Asesora de Investigación Científica y Técnica of Spain. Peer reviewed

Related Organizations

IE University
Spain
Complutense University of Madrid
Spain

Keywords

Oxides, Tantalum, Tellurium

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