The compound described by Na8SnSb4 crystallizes in the cubic Fd-3m space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 14-coordinate geometry to six equivalent Na(2), two equivalent Sn(1), and six equivalent Sb(1) atoms. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to two equivalent Na(1) and four equivalent Sb(1) atoms. Sn(1) is bonded in a body-centered cubic geometry to four equivalent Na(1) and four equivalent Sb(1) atoms. Sb(1) is bonded in a 10-coordinate geometry to three equivalent Na(1), six equivalent Na(2), and one Sn(1) atom. is represented by the CIF file [CIF]
data_Na8SnSb4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.452
_cell_length_b   10.452
_cell_length_c   10.452
_cell_angle_alpha   59.990
_cell_angle_beta   59.990
_cell_angle_gamma   59.990
_symmetry_Int_Tables_number   1
_cell_volume   807.179
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Na  Na0  1  0.625  0.125  0.625  1.0
  Na  Na1  1  0.625  0.625  0.125  1.0
  Na  Na2  1  0.125  0.625  0.625  1.0
  Na  Na3  1  0.625  0.625  0.625  1.0
  Na  Na4  1  0.020  0.020  0.480  1.0
  Na  Na5  1  0.770  0.230  0.230  1.0
  Na  Na6  1  0.230  0.770  0.770  1.0
  Na  Na7  1  0.770  0.770  0.230  1.0
  Na  Na8  1  0.770  0.230  0.770  1.0
  Na  Na9  1  0.230  0.770  0.230  1.0
  Na  Na10  1  0.480  0.020  0.480  1.0
  Na  Na11  1  0.480  0.020  0.020  1.0
  Na  Na12  1  0.020  0.480  0.480  1.0
  Na  Na13  1  0.020  0.480  0.020  1.0
  Na  Na14  1  0.230  0.230  0.770  1.0
  Na  Na15  1  0.480  0.480  0.020  1.0
  Sn  Sn16  1  0.500  0.500  0.500  1.0
  Sn  Sn17  1  0.750  0.750  0.750  1.0
  Sb  Sb18  1  0.415  0.862  0.862  1.0
  Sb  Sb19  1  0.862  0.862  0.862  1.0
  Sb  Sb20  1  0.834  0.389  0.389  1.0
  Sb  Sb21  1  0.389  0.389  0.389  1.0
  Sb  Sb22  1  0.389  0.389  0.834  1.0
  Sb  Sb23  1  0.862  0.415  0.862  1.0
  Sb  Sb24  1  0.862  0.862  0.415  1.0
  Sb  Sb25  1  0.389  0.834  0.389  1.0
[/CIF]
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The compound described by Na8SnSb4 crystallizes in the cubic Fd-3m space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 14-coordinate geometry to six equivalent Na(2), two equivalent Sn(1), and six equivalent Sb(1) atoms. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to two equivalent Na(1) and four equivalent Sb(1) atoms. Sn(1) is bonded in a body-centered cubic geometry to four equivalent Na(1) and four equivalent Sb(1) atoms. Sb(1) is bonded in a 10-coordinate geometry to three equivalent Na(1), six equivalent Na(2), and one Sn(1) atom. is represented by the CIF file [CIF]
data_Na8SnSb4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.452
_cell_length_b   10.452
_cell_length_c   10.452
_cell_angle_alpha   59.990
_cell_angle_beta   59.990
_cell_angle_gamma   59.990
_symmetry_Int_Tables_number   1
_cell_volume   807.179
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Na  Na0  1  0.625  0.125  0.625  1.0
  Na  Na1  1  0.625  0.625  0.125  1.0
  Na  Na2  1  0.125  0.625  0.625  1.0
  Na  Na3  1  0.625  0.625  0.625  1.0
  Na  Na4  1  0.020  0.020  0.480  1.0
  Na  Na5  1  0.770  0.230  0.230  1.0
  Na  Na6  1  0.230  0.770  0.770  1.0
  Na  Na7  1  0.770  0.770  0.230  1.0
  Na  Na8  1  0.770  0.230  0.770  1.0
  Na  Na9  1  0.230  0.770  0.230  1.0
  Na  Na10  1  0.480  0.020  0.480  1.0
  Na  Na11  1  0.480  0.020  0.020  1.0
  Na  Na12  1  0.020  0.480  0.480  1.0
  Na  Na13  1  0.020  0.480  0.020  1.0
  Na  Na14  1  0.230  0.230  0.770  1.0
  Na  Na15  1  0.480  0.480  0.020  1.0
  Sn  Sn16  1  0.500  0.500  0.500  1.0
  Sn  Sn17  1  0.750  0.750  0.750  1.0
  Sb  Sb18  1  0.415  0.862  0.862  1.0
  Sb  Sb19  1  0.862  0.862  0.862  1.0
  Sb  Sb20  1  0.834  0.389  0.389  1.0
  Sb  Sb21  1  0.389  0.389  0.389  1.0
  Sb  Sb22  1  0.389  0.389  0.834  1.0
  Sb  Sb23  1  0.862  0.415  0.862  1.0
  Sb  Sb24  1  0.862  0.862  0.415  1.0
  Sb  Sb25  1  0.389  0.834  0.389  1.0
[/CIF]
.