data_[Ag4Pb4Se4O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ag  1.9300  1.6000  1.0867
  Pb  2.3300  1.8000  1.1225
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [5.9812]
_cell_length_b [3.7650]
_cell_length_c [15.5313]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [AgPbSeO]
_chemical_formula_sum '[Ag4 Pb4 Se4 O4]'
_cell_volume [349.7568]
_cell_formula_units_Z [4]
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
[
  Ag  Ag0  4  0.1846  0.7500  0.2021  1
  Pb  Pb1  4  0.2404  0.2500  0.4192  1
  Se  Se2  4  0.2462  0.2500  0.0885  1
  O  O3  4  0.2271  0.2500  0.8380  1
]