data_[K4Na16Pb2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Na  0.9300  1.8000  1.1600
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [16.0936]
_cell_length_b [8.8760]
_cell_length_c [7.0056]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.1015]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Na8Pb]
_chemical_formula_sum '[K4 Na16 Pb2]'
_cell_volume [945.6254]
_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
[
  K  K0  4  0.1298  0.0000  0.5519  1
  Na  Na1  8  0.0942  0.3064  0.9324  1
  Na  Na2  4  0.0956  0.5000  0.4179  1
  Na  Na3  4  0.2205  0.0000  0.1367  1
  Pb  Pb4  2  0.0000  0.0000  0.0000  1
]