data_[Na8Pb2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Pb  2.3300  1.8000  1.1225
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.5152]
_cell_length_b [3.4255]
_cell_length_c [8.2160]
_cell_angle_alpha [90.0000]
_cell_angle_beta [122.3233]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na4PbO4]
_chemical_formula_sum '[Na8 Pb2 O8]'
_cell_volume [273.8597]
_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  0.1324  0.0000  0.3953  1
  Na  Na1  4  0.2066  0.5000  0.8231  1
  Pb  Pb2  2  0.0000  0.5000  0.0000  1
  O  O3  4  0.0759  0.0000  0.8880  1
  O  O4  4  0.1995  0.5000  0.2764  1
]