A Borosilicide with Clathrate VIII Structure

Julia Maria Hübner, Wilder Carrillo-Cabrera, Primoz Kozelj, Yurii Prots, Michael Baitinger, Ulrich Schwarz, Walter Jung

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

Sammanfattning

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 I43¯ m; a = 9.7187(2) Å 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 (Pm3¯ n; a = 9. 977(2) Å 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.

Originalspråkengelska
Sidor (från-till)13456-13460
Antal sidor5
TidskriftJournal of the American Chemical Society
Volym144
Nummer30
DOI
StatusPublished - 2022

Ämnesklassifikation (UKÄ)

  • Oorganisk kemi

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