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A Borosilicide with Clathrate VIII Structure

MPG-Autoren
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Hübner,  Julia-Maria
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Carrillo-Cabrera,  Wilder
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons247344

Kozelj,  Primoz
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126806

Prots,  Yurii
Yuri Prots, Chemical Metal Science, 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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Schwarz,  Ulrich
Ulrich Schwarz, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Jung,  Walter
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Zitation

Hübner, J.-M., Carrillo-Cabrera, W., Kozelj, P., Prots, Y., Baitinger, M., Schwarz, U., et al. (2022). A Borosilicide with Clathrate VIII Structure. Journal of the American Chemical Society, 144(30), 13456-13460. doi:10.1021/jacs.2c04745.


Zitierlink: https://hdl.handle.net/21.11116/0000-000A-E329-8
Zusammenfassung
The high-pressure phase Na8BxSi46-x (3 < x < 5) is the first representative of a borosilicide crystallizing in the rarely occurring clathrate VIII type structure. Crystals with composition Na8B4Si42 (space group 14(3) over barm; a = 9.7187(2) angstrom; Pearson symbol cI54) were obtained at 5-8 GPa and 1200 K. The clathrate I modification exists for the same composition at lower pressure with a larger cell volume (pm(3) over barn; a = 9. 977(2) angstrom; cP54). Profound structural adaptions allow for a higher density of the clathrate VIII type than clathrate I, opening up the perspective of obtaining clathrate VIII type compounds as high-pressure forms of clathrate I.