data_[Na4Ag2Sn12]
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
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.5439]
_cell_length_b [6.5698]
_cell_length_c [6.6567]
_cell_angle_alpha [90.0000]
_cell_angle_beta [92.9097]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na2AgSn6]
_chemical_formula_sum '[Na4 Ag2 Sn12]'
_cell_volume [504.2025]
_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  4  0.1594  0.5000  0.8508  1.0
  Ag  Ag1  2  0.0000  0.0000  0.0000  1.0
  Sn  Sn2  8  0.0907  0.2585  0.3257  1.0
  Sn  Sn3  4  0.1759  0.0000  0.7012  1.0
]