High‐Pressure Phases of KSi, KGe, RbSi, RbGe, CsSi, and CsGe with the NaPb‐Type Structure
- 1 July 1984
- journal article
- research article
- Published by Wiley in Angewandte Chemie International Edition in English
- Vol. 23 (7) , 528-529
- https://doi.org/10.1002/anie.198405281
Abstract
Six novel phases of the 1:1‐silicides and ‐germanides of K, Rb, and Cs have been synthesized using a high‐temperature method (4 GPa, 600°C); under normal conditions they are metastable. The six compounds crystallize in the cubic KGe‐type at normal pressure; the nine phases belong to the tetragonal NaPb‐type, which have previously only been found in stannides and plumbides of the alkali metals. The constant axes ratio c/a ≈ 1.63 suggests geometrical relationships of the NaPb‐type.Keywords
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