data_[Rb8Ce4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ce  1.1200  1.8500  1.0800
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.4401]
_cell_length_b [11.1208]
_cell_length_c [6.9388]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.2567]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2CeO3]
_chemical_formula_sum '[Rb8 Ce4 O12]'
_cell_volume [471.9362]
_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
[
  Rb  Rb0  4  0.0000  0.3430  0.0000  1.0
  Rb  Rb1  2  0.0000  0.0000  0.0000  1.0
  Rb  Rb2  2  0.0000  0.5000  0.5000  1.0
  Ce  Ce3  4  0.0000  0.1670  0.5000  1.0
  O  O4  8  0.2381  0.1992  0.3138  1.0
  O  O5  4  0.1653  0.0000  0.6833  1.0
]