The impact of boron atoms on clathrate-I silicides: composition range of the 
borosilicide K8−xBySi46−y

Jung, Walter; Böhme, Bodo; Hübner, Julia M.; Burkhardt, Ulrich; Borrmann, Horst; Bobnar, Matej; Nguyen, Hong Duong; Pantenburg, Ingo; Etter, Martin; Schwarz, Ulrich; Grin, Yuri; Baitinger, Michael

doi:10.1039/d0dt03339a

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The impact of boron atoms on clathrate-I silicides: composition range of the borosilicide K_8−xB_ySi_46−y

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

/persons/resource/persons126538

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

/persons/resource/persons220809

Hübner, Julia M.
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126556

Burkhardt, Ulrich
Ulrich Burkhardt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Borrmann, Horst
Horst Borrmann, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons146769

Bobnar, Matej
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126781

Nguyen, Hong Duong
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126841

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

/persons/resource/persons126626

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

/persons/resource/persons126529

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

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Citation

Jung, W., Böhme, B., Hübner, J. M., Burkhardt, U., Borrmann, H., Bobnar, M., et al. (2021). The impact of boron atoms on clathrate-I silicides: composition range of the borosilicide K_8−xB_ySi_46−y. Dalton Transactions, 50(4), 1274-1282. doi:10.1039/d0dt03339a.

Cite as: https://hdl.handle.net/21.11116/0000-0008-0A2D-C

Abstract

The clathrate-I borosilicide K8−xBySi46−y(0.8 ≤x≤ 1.2 and 6.4 ≤y≤ 7.2; space groupPm3̄n) was prepared in sealed tantalum ampoules between 900 °C and 1000 °C. By high-pressure preparation at 8 GPa and 1000 °C, a higher boron content is achieved (x= 0.2,y= 7.8). Crystal structure and composition were established from X-ray diffraction data, chemical analysis, WDX spectroscopy, and confirmed by11B and29Si NMR, and magnetic susceptibility measurements. The compositions are electron-balanced according to the Zintl rule within one estimated standard deviation. The lattice parameter varies with composition froma= 9.905 Å for K7.85(2)B7.8(1)Si38.2(1)toa= 9.968(1) Å for K6.80(2)B6.4(5)Si39.6(5) © The Royal Society of Chemistry 2021.