data_[Na2Ce4I2O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ce  1.1200  1.8500  1.0800
  I  2.6600  1.4000  1.2733
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [7.0342]
_cell_length_b [7.1098]
_cell_length_c [7.1021]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [NaCe2IO8]
_chemical_formula_sum '[Na2 Ce4 I2 O16]'
_cell_volume [355.1903]
_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  2  0.0000  0.0000  0.5000  1.0
  Ce  Ce1  4  0.0000  0.5000  0.2573  1.0
  I  I2  2  0.0000  0.0000  0.0000  1.0
  O  O3  8  0.0000  0.1835  0.1943  1.0
  O  O4  4  0.1789  0.5000  0.5000  1.0
  O  O5  4  0.2245  0.5000  0.0000  1.0
]