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Cs 8− x Si 46 : A Type‐I Clathrate with Expanded Silicon Framework
Author(s) -
Wosylus Aron,
Veremchuk Igor,
Schnelle Walter,
Baitinger Michael,
Schwarz Ulrich,
Grin Yuri
Publication year - 2009
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200900307
Subject(s) - clathrate hydrate , alkali metal , silicon , crystallography , structure type , binary number , analytical chemistry (journal) , materials science , chemistry , crystal structure , hydrate , metallurgy , organic chemistry , arithmetic , mathematics
The synthesis of the new binary Cs 8− x Si 46 (shown here) completes the series of binary alkali metal silicides with a clathrate‐I structure M 8− x Si 46 (M=Na, K, Rb, Cs). In contrast with the lighter homologues, Cs 8− x Si 46 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.