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Rare-Earth Fluorite-like Li 0.42 La 4.58 Mo 3 O 15.76±δ F 0.42±ε Molybdates: Crystal Growth and Atomic Structure.
- Source :
- Crystals (2073-4352); Jul2023, Vol. 13 Issue 7, p1009, 9p
- Publication Year :
- 2023
-
Abstract
- Rare-earth fluorine-containing molybdates of the Ln<subscript>5</subscript>Mo<subscript>3</subscript>O<subscript>16+δ</subscript> oxygen–electron conductor family with the LiLa<subscript>4</subscript>Mo<subscript>3</subscript>O<subscript>15</subscript>F composition were synthesized for the first time as single crystals by the flux method. An accurate X-ray diffraction analysis of the obtained crystals was carried out at 20 and −183 °C. The LiLa<subscript>4</subscript>Mo<subscript>3</subscript>O<subscript>15</subscript>F compound is isostructural to the fluorine-free analogue with a cubic structure (space group Pn 3 ¯ n). It is shown that lithium atoms replace one of the two positions of lanthanum in the more distorted LaO<subscript>8</subscript> polyhedron. According to X-ray diffraction analysis, fluorine atoms replace the positions of over-stoichiometric oxygen located in the vast cavities of the structure. So, fluorine anions can promote the interstitial conductivity of F-containing LiLa<subscript>4</subscript>Mo<subscript>3</subscript>O<subscript>15</subscript>F molybdates. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20734352
- Volume :
- 13
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Crystals (2073-4352)
- Publication Type :
- Academic Journal
- Accession number :
- 168598846
- Full Text :
- https://doi.org/10.3390/cryst13071009