Flexible Frameworks and Physical Properties of Compounds with Transition Metals, Derived from Ellenbergerite and β-Tridymite
| Autor: | Larisa Shvanskaya, Olga V. Yakubovich |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Crystal chemistry General Chemistry 010403 inorganic & nuclear chemistry Condensed Matter Physics Alkali metal 01 natural sciences 0104 chemical sciences Crystal Crystallography Tridymite Transition metal Polymorphism (materials science) 0103 physical sciences General Materials Science Chemical function |
| Zdroj: | Crystallography Reports. 66:10-28 |
| ISSN: | 1562-689X 1063-7745 |
| DOI: | 10.1134/s106377452101017x |
| Popis: | The specific features of crystal chemistry and physical properties of phosphates (arsenates, vanadates) of alkali and transition metals, crystallized as derivatives of minerals ellenbergerite (Mg,Ti,Zr, $$\square $$ )2Mg6(A1,Mg)6(Si,P)2Si6O28(OH)10 and β-tridymite SiO2, have been analyzed in the aspect of flexibility of their radically different frameworks. The crystal chemical function of cations of transition metals in the structures of ellenbergerite- and tridymite-like analogs has been discussed. The data on their formation methods and thermodynamic and electrical properties are given. The reasons for the structural differences of tridymite-like phases and the relationship between the polymorphism and variations in the coordination polyhedra of transition metals, tending to the most stable configuration, have been investigated. |
| Databáze: | OpenAIRE |
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