Cs(8-x)Si(46): a type-I clathrate with expanded silicon framework.
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 degrees C between 2-10 GPa and the Cs content rises with applied pressure.
Wosylus
Aron
A
Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Strasse 40, 01187 Dresden, Germany.
Veremchuk
Igor
I
Schnelle
Walter
W
Baitinger
Michael
M
Schwarz
Ulrich
U
Grin
Yuri
Y