data_[Na20Ag4Sn4]
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/c]
_cell_length_a [8.4910]
_cell_length_b [8.3877]
_cell_length_c [11.7488]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.4742]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Na5AgSn]
_chemical_formula_sum '[Na20 Ag4 Sn4]'
_cell_volume [820.0273]
_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  0.1341  0.3681  0.5311  1.0
  Na  Na1  8  0.2063  0.2415  0.8531  1.0
  Na  Na2  4  0.0000  0.0981  0.2500  1.0
  Ag  Ag3  4  0.0000  0.4651  0.2500  1.0
  Sn  Sn4  4  0.0000  0.0000  0.0000  1.0
]