data_[Ce2Nd2Sm4Se6O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ce  1.1200  1.8500  1.0800
  Nd  1.1400  1.8500  1.2765
  Sm  1.1700  1.8500  1.2290
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [8.4202]
_cell_length_b [3.9941]
_cell_length_c [12.8686]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [CeNdSm2Se3O4]
_chemical_formula_sum '[Ce2 Nd2 Sm4 Se6 O8]'
_cell_volume [432.7921]
_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
[
  Ce  Ce0  2  0.0000  0.0000  0.0144  1
  Nd  Nd1  2  0.5000  0.0000  0.9998  1
  Sm  Sm2  4  0.2638  0.0000  0.6823  1
  Se  Se3  4  0.1514  0.0000  0.3521  1
  Se  Se4  2  0.5000  0.0000  0.3119  1
  O  O5  4  0.2588  0.0000  0.0896  1
  O  O6  2  0.0000  0.0000  0.6195  1
  O  O7  2  0.5000  0.0000  0.5891  1
]