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Cs8−xSi46: A Type‐I Clathrate with Expanded Silicon Framework |
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| Authors: | Aron Wosylus Dipl.‐Chem. Igor Veremchuk Dr. Walter Schnelle Dr. Michael Baitinger Dr. Ulrich Schwarz Priv.‐Doz. Dr. Yuri Grin Prof. |
| Affiliation: | Max‐Planck‐Institut für Chemische Physik fester Stoffe, N?thnitzer Stra?e 40, 01187 Dresden (Germany), Fax: (+49)?351‐4646‐4002 |
| Abstract: | The synthesis of the new binary Cs8?xSi46 (shown here) completes the series of binary alkali metal silicides with a clathrate‐I structure M8?xSi46 (M=Na, K, Rb, Cs). In contrast with the lighter homologues, Cs8?xSi46 can be prepared only at elevated pressures. The compound was obtained at 1200 °C between 2–10 GPa and the Cs content rises with applied pressure.  |
| Keywords: | cesium clathrates high‐pressure chemistry silicon |