Structural characterization of NaMgH2F and NaMgH3
| Autor: | J.P. Laval, J.P. Bastide, Jean‐Philippe Soulie, A. Bouamrane |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Hydrogen
Rietveld refinement Mechanical Engineering Inorganic chemistry Lattice distortion chemistry.chemical_element Crystal structure Condensed Matter Physics Characterization (materials science) Crystallography chemistry Mechanics of Materials General Materials Science Orthorhombic crystal system Direct reaction |
| Zdroj: | Materials Research Bulletin. 35:545-549 |
| ISSN: | 0025-5408 |
| DOI: | 10.1016/s0025-5408(00)00249-x |
| Popis: | The direct reaction of hydrogen on a mixture of Na + Mg or NaF + Mg allowed for synthesis of NaMgH3 and NaMgH2F, respectively. Both phases were indexed with an orthorhombic unit cell with dimensions a = 546.34, b = 770.30, c = 541.08 pm for NaMgH3 and a = 547.59, b = 769.68, c = 540.31 pm for NaMgH2F. The crystal structures were refined by X-ray Rietveld refinement. They derive from the perovskite structure type by a Pmm → Pnma distortion. In the hydridofluoride, H− and F− anions are equally distributed in the two anionic sites in a disordered way. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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