data_[Ce2Nb8O24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ce  1.1200  1.8500  1.0800
  Nb  1.6000  1.4500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I4mm]
_cell_length_a [7.8733]
_cell_length_b [7.8733]
_cell_length_c [7.8272]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [107]
_chemical_formula_structural [CeNb4O12]
_chemical_formula_sum '[Ce2 Nb8 O24]'
_cell_volume [485.2050]
_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  0.0009  1
  Nb  Nb1  8  0.2460  0.2460  0.2667  1
  O  O2  8  0.0000  0.2398  0.1849  1
  O  O3  8  0.0000  0.2411  0.8036  1
  O  O4  8  0.2086  0.2086  0.4946  1
]