data_[K10Na8Pb4]
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 [Immm]
_cell_length_a [6.4903]
_cell_length_b [11.0104]
_cell_length_c [14.8326]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [K5(Na2Pb)2]
_chemical_formula_sum '[K10 Na8 Pb4]'
_cell_volume [1059.9570]
_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  8  0.0000  0.1697  0.2413  1.0
  K  K1  2  0.0000  0.0000  0.0000  1.0
  Na  Na2  4  0.0000  0.3106  0.5000  1.0
  Na  Na3  4  0.0000  0.5000  0.1161  1.0
  Pb  Pb4  4  0.0000  0.5000  0.3299  1.0
]