Sc2MgGa2 and Y2MgGa2
2009 (English)In: Acta Crystallographica Section C: Crystal Structure Communications, ISSN 0108-2701, Vol. C65, no 3, i7-i8 p.Article in journal (Refereed) Published
Scandium magnesium gallide, Sc2MgGa2, and yttrium magnesium gallide, Y2MgGa2, were synthesized from the corresponding elements by heating under an argon atmosphere in an induction furnace. These intermetallic compounds crystallize in the tetragonal Mo2FeB2-type structure. All three crystallographically unique atoms occupy special positions and the site symmetries of (Sc/Y, Ga) and Mg are m2m and 4/m, respectively. The coordinations around Sc/Y, Mg and Ga are pentagonal (Sc/Y), tetragonal (Mg) and triangular (Ga) prisms, with four (Mg) or three (Ga) additional capping atoms leading to the coordination numbers , [8+4] and [6+3], respectively. The crystal structure of Sc2MgGa2 was determined from single-crystal diffraction intensities and the isostructural Y2MgGa2 was identified from powder diffraction data.
Place, publisher, year, edition, pages
International Union of Crystallography , 2009. Vol. C65, no 3, i7-i8 p.
Research subject Inorganic Chemistry
IdentifiersURN: urn:nbn:se:uu:diva-99157DOI: 10.1107/S0108270109000766OAI: oai:DiVA.org:uu-99157DiVA: diva2:202320