data_[Na12Ag8Sb12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ag  1.9300  1.6000  1.0867
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [4.7455]
_cell_length_b [11.5395]
_cell_length_c [15.6069]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Na3Ag2Sb3]
_chemical_formula_sum '[Na12 Ag8 Sb12]'
_cell_volume [854.6437]
_cell_formula_units_Z [4]
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  8  0.0000  0.0803  0.6204  1.0
  Na  Na1  4  0.0000  0.3637  0.7500  1.0
  Ag  Ag2  8  0.0000  0.2106  0.1010  1.0
  Sb  Sb3  8  0.0000  0.3856  0.5354  1.0
  Sb  Sb4  4  0.0000  0.3419  0.2500  1.0
]