data_[Na10Sn4Bi10]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sn  1.9600  1.4500  0.8300
  Bi  2.0200  1.6000  1.0350
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [18.1279]
_cell_length_b [3.4063]
_cell_length_c [13.9217]
_cell_angle_alpha [90.0000]
_cell_angle_beta [120.9810]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na5Sn2Bi5]
_chemical_formula_sum '[Na10 Sn4 Bi10]'
_cell_volume [737.0010]
_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  0.1685  0.5000  0.2583  1.0
  Na  Na1  4  0.1698  0.5000  0.0132  1.0
  Na  Na2  2  0.0000  0.5000  0.5000  1.0
  Sn  Sn3  4  0.0204  0.0000  0.7748  1.0
  Bi  Bi4  4  0.1442  0.0000  0.4477  1.0
  Bi  Bi5  4  0.1714  0.5000  0.7701  1.0
  Bi  Bi6  2  0.0000  0.0000  0.0000  1.0
]