data_[Na1Bi3Pb7]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Bi  2.0200  1.6000  1.0350
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [P3m1]
_cell_length_a [7.0527]
_cell_length_b [7.0527]
_cell_length_c [8.4076]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [156]
_chemical_formula_structural [NaBi3Pb7]
_chemical_formula_sum '[Na1 Bi3 Pb7]'
_cell_volume [362.1694]
_cell_formula_units_Z [1]
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  1  0.3333  0.6667  0.5581  1.0
  Bi  Bi1  3  0.0073  0.5037  0.2200  1.0
  Pb  Pb2  3  0.1638  0.8362  0.8959  1.0
  Pb  Pb3  3  0.3280  0.1640  0.5341  1.0
  Pb  Pb4  1  0.6667  0.3333  0.8766  1.0
]