Synthesis of the clathrate-I phase Ba(8-x)Si46 via redox reactions |
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| Authors: | Liang Ying Böhme Bodo Reibold Marianne Schnelle Walter Schwarz Ulrich Baitinger Michael Lichte Hannes Grin Yuri |
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| Institution: | Max-Planck Institute for Chemical Physics of Solids, N?thnitzer Strasse 40, 01187 Dresden, Germany. |
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| Abstract: | The clathrate-I phase Ba(8-x)Si(46) (space group Pm3?n) was synthesized by oxidation of Ba(4)Li(2)Si(6) with gaseous HCl. Microcrystalline powders of the clathrate phase were obtained within a few minutes. The reaction temperature and the pressure of HCl were optimized to achieve good-quality crystalline products with a composition range of 1.3 < x < 1.9. The new preparation route presented here provides an alternative to the high-pressure synthesis applied so far. |
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