Na3MgB37Si9: an icosahedral B12cluster framework containing {Si8} units

Haruhiko Morito, Takuji Ikeda, Yukari Katsura, Hisanori Yamane

Research output: Contribution to journalArticlepeer-review


Single crystals of a novel sodium-magnesium boride silicide, Na3MgB37Si9 [a = 10.1630(3)A, c = 16.5742(6)A, space group R m (No. 166)], were synthesized by heating a mixture of Na, Si and crystalline B with B2O3 flux in Mg vapor at 1373K. The Mg atoms in the title compound are located at an interstitial site of the Dy2.1B37Si9-type structure with an occupancy of 0.5. The (001) layers of B12 icosahedra stack along the c-axis direction with shifting in the [-a/3, b/3, c/3] direction. A three-dimensional framework structure of the layers is formed via B - Si bonds and {Si8} units of [Si]3 - Si - Si - [Si]3.

Original languageEnglish
Pages (from-to)203-206
Number of pages4
JournalActa Crystallographica Section E: Crystallographic Communications
Publication statusPublished - 2022 Jan 1


  • BOflux
  • X-ray diffraction
  • boron-rich boride
  • crystal structure
  • crystal structure
  • silicon
  • single-crystal
  • sodium

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics


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