data_[Na4Sn2Pb10]
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
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.4301]
_cell_length_b [7.2393]
_cell_length_c [6.8885]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.4468]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na2SnPb5]
_chemical_formula_sum '[Na4 Sn2 Pb10]'
_cell_volume [470.0521]
_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  2  0.0000  0.0000  0.5000  1.0
  Na  Na1  2  0.0000  0.5000  0.0000  1.0
  Sn  Sn2  2  0.0000  0.0000  0.0000  1.0
  Pb  Pb3  4  0.2500  0.2500  0.0000  1.0
  Pb  Pb4  4  0.2500  0.2500  0.5000  1.0
  Pb  Pb5  2  0.0000  0.5000  0.5000  1.0
]