Rare-Earth Fluorite-like Li0.42La4.58Mo3O15.76±δF0.42±ε Molybdates: Crystal Growth and Atomic Structure
| Autor: | Ekaterina I. Orlova, Timofei A. Sorokin, Vladimir B. Kvartalov, Alexander M. Antipin, Nataliya E. Novikova, Elena P. Kharitonova, Nataliya I. Sorokina, Olga A. Alekseeva, Valentina I. Voronkova |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Crystals, Vol 13, Iss 7, p 1009 (2023) |
| Druh dokumentu: | article |
| ISSN: | 13071009 2073-4352 |
| DOI: | 10.3390/cryst13071009 |
| Popis: | Rare-earth fluorine-containing molybdates of the Ln5Mo3O16+δ oxygen–electron conductor family with the LiLa4Mo3O15F 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 LiLa4Mo3O15F compound is isostructural to the fluorine-free analogue with a cubic structure (space group Pn3¯n). It is shown that lithium atoms replace one of the two positions of lanthanum in the more distorted LaO8 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 LiLa4Mo3O15F molybdates. |
| Databáze: | Directory of Open Access Journals |
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