The material described by Na is alpha Samarium structured and crystallizes in the monoclinic C2/m space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to six equivalent Na(1) and six equivalent Na(2) atoms to form a mixture of corner, edge, and face-sharing NaNa12 cuboctahedra. In the second Na site, Na(2) is bonded to three equivalent Na(1) and nine equivalent Na(2) atoms to form a mixture of corner, edge, and face-sharing NaNa12 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.697
_cell_length_b   3.696
_cell_length_c   9.614
_cell_angle_alpha   78.722
_cell_angle_beta   101.279
_cell_angle_gamma   119.706
_symmetry_Int_Tables_number   1
_cell_volume   111.156
_cell_formula_units_Z   3
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  0.000  0.000  0.000  1.0
  Na  Na1  1  0.777  0.222  0.333  1.0
  Na  Na2  1  0.223  0.778  0.667  1.0
[/CIF]
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The material described by Na is alpha Samarium structured and crystallizes in the monoclinic C2/m space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to six equivalent Na(1) and six equivalent Na(2) atoms to form a mixture of corner, edge, and face-sharing NaNa12 cuboctahedra. In the second Na site, Na(2) is bonded to three equivalent Na(1) and nine equivalent Na(2) atoms to form a mixture of corner, edge, and face-sharing NaNa12 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.697
_cell_length_b   3.696
_cell_length_c   9.614
_cell_angle_alpha   78.722
_cell_angle_beta   101.279
_cell_angle_gamma   119.706
_symmetry_Int_Tables_number   1
_cell_volume   111.156
_cell_formula_units_Z   3
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  0.000  0.000  0.000  1.0
  Na  Na1  1  0.777  0.222  0.333  1.0
  Na  Na2  1  0.223  0.778  0.667  1.0
[/CIF]
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