data_[Na16Ge2Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ge  2.0100  1.2500  0.7700
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [9.8266]
_cell_length_b [12.6772]
_cell_length_c [5.2730]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Na8GePb2]
_chemical_formula_sum '[Na16 Ge2 Pb4]'
_cell_volume [656.8757]
_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  8  0.1638  0.1268  0.0000  1.0
  Na  Na1  4  0.0000  0.2386  0.5000  1.0
  Na  Na2  4  0.1782  0.5000  0.5000  1.0
  Ge  Ge3  2  0.0000  0.0000  0.5000  1.0
  Pb  Pb4  4  0.0000  0.3802  0.0000  1.0
]