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Preparation of anionic clathrate-II K24-xGe136 by filling of Ge(cF136)

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Böhme,  B.
Bodo Böhme, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Auffermann,  Gudrun
Gudrun Auffermann, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Baitinger,  Michael
Michael Baitinger, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Grin,  Yuri
Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Böhme, B., Reibold, M., Auffermann, G., Lichte, H., Baitinger, M., & Grin, Y. (2014). Preparation of anionic clathrate-II K24-xGe136 by filling of Ge(cF136). Zeitschrift für Kristallographie: International Journal for Structural, Physical, and Chemical Aspects of Crystalline Materials, 229(10), 677-686. doi:10.1515/zkri-2014-1764.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0024-9B46-3
Abstract
Metastable Ge(cF136) with empty clathrate-II crystal structure was successfully used for the preparation of otherwise hardly accessible germanium clathrate phases. On reaction of Ge(cF136) with potassium vapour at 280 degrees C for 6 days, the new clathrate-II phase K24Ge136 was formed, in which the cages of the germanium framework are completely filled by potassium atoms. The crystal structure of KxGe136 is discussed for different potassium contents (x = 0, 8.6, 24).