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1 results

  • Synthesis and crystal structure of (Ag,Pd)22Se6

  • F. Laufek, A. Vymazalová, D.A. Chareev, A.V. Kristavchuk, J. Drahokoupil, M.V. Voronin
  • Journal:
    Powder Diffraction / Volume 28 / Issue 1 / March 2013
    Published online by Cambridge University Press:
    13 March 2013, pp. 13-17

  • The (Ag,Pd)22Se6 phase was synthesized from individual elements by silica glass tube technique and structurally characterized from powder X-ray diffraction data. The (Ag,Pd)22Se6 phase crystallizes in Fm$\overline3$m symmetry, unit-cell parameters: a = 12.3169(2) Å, V = 1862.55(5) Å3, Z = 4, and Dc = 10.01 g/cm3. The crystal structure of the (Ag,Pd)22Se6 phase represents a stuffed 3a.3a.3a superstructure of the Pd structure (fcc), where only 4 from 108 available octahedral holes are occupied. Its crystal structure is related to the Cr23C6 structure type.