data_[Na4Sr2Bi4Pb2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sr  0.9500  2.0000  1.3200
  Bi  2.0200  1.6000  1.0350
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [4.9241]
_cell_length_b [9.9371]
_cell_length_c [8.5423]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [Na2SrBi2Pb]
_chemical_formula_sum '[Na4 Sr2 Bi4 Pb2]'
_cell_volume [417.9895]
_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  0.1842  0.3710  1.0
  Na  Na1  2  0.5000  0.0766  0.0505  1.0
  Sr  Sr2  2  0.0000  0.4233  0.9667  1.0
  Bi  Bi3  2  0.0000  0.1218  0.7638  1.0
  Bi  Bi4  2  0.5000  0.3853  0.2570  1.0
  Pb  Pb5  2  0.5000  0.2998  0.6366  1.0
]