Subsolidus phase relations in Na{sub 2}O-CuO-Sb{sub 2}O{sub n} system and crystal structure of new sodium copper antimonate Na{sub 3}Cu{sub 2}SbO{sub 6}

Journal Article · Fri Apr 15 00:00:00 EDT 2005 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2005.02.002· OSTI ID:20725886

Smirnova, O A ^[1]; Nalbandyan, V B ^[2]; Petrenko, A A ^[2]; Avdeev, M ^[1]

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1. Department of Ceramics and Glass Engineering, CICECO, University of Aveiro, 3810-193 Aveiro (Portugal)
2. Chemistry Faculty, Department of General and Inorganic Chemistry, Rostov State University, Zorge 7, Rostov-on-Don 344090 (Russian Federation)

Subsolidus phase relation studies in the NaSb{sub 3}O{sub 7}-Na{sub 3}SbO{sub 4}-CuO-CuSb{sub 2}O{sub 6} quadrangle of Na{sub 2}O-CuO-Sb{sub 2}O{sub n} system at 1123-1173K revealed the formation of one new compound Na{sub 3}Cu{sub 2}SbO{sub 6}. It is a superstructure derived from {alpha}-NaFeO{sub 2} type, space group C2/m, lattice constants: a=5.6759(1)A, b=8.8659(1)A, c=5.8379(1)A, {beta}=113.289(1){sup o}. All ions are in octahedral environment, but CuO{sub 6} polyhedron exhibits strong elongation due to Jahn-Teller effect (Cu-O: 2.000(2)Ax2, 2.021(2)Ax2, 2.494(3)Ax2), whereas SbO{sub 6} octahedron is almost regular. The relationship to other similar superlattices is discussed.

• OSTI ID: 20725886
• Journal Information: Journal of Solid State Chemistry, Vol. 178, Issue 4; Other Information: DOI: 10.1016/j.jssc.2005.02.002; PII: S0022-4596(05)00053-8; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANTIMONY OXIDES
COPPER OXIDES
JAHN-TELLER EFFECT
LATTICE PARAMETERS
MONOCLINIC LATTICES
SODIUM OXIDES
SPACE GROUPS
SUPERLATTICES
X-RAY DIFFRACTION