data_[Ce4Ag4Se4O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ce  1.1200  1.8500  1.0800
  Ag  1.9300  1.6000  1.0867
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P4bm]
_cell_length_a [5.8291]
_cell_length_b [5.8291]
_cell_length_c [9.4577]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [100]
_chemical_formula_structural [CeAgSeO]
_chemical_formula_sum '[Ce4 Ag4 Se4 O4]'
_cell_volume [321.3627]
_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
[
  Ce  Ce0  2  0.0000  0.0000  0.8711  1
  Ce  Ce1  2  0.0000  0.5000  0.1289  1
  Ag  Ag2  4  0.2325  0.2675  0.4985  1
  Se  Se3  2  0.0000  0.0000  0.3022  1
  Se  Se4  2  0.0000  0.5000  0.7001  1
  O  O5  4  0.2499  0.7499  0.0004  1
]