data_[Ce8As8O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ce  1.1200  1.8500  1.0800
  As  2.1800  1.1500  0.6600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.1536]
_cell_length_b [15.0676]
_cell_length_c [7.1713]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Ce2As2O]
_chemical_formula_sum '[Ce8 As8 O4]'
_cell_volume [448.8185]
_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  4  0.0000  0.1650  0.5303  1.0
  Ce  Ce1  4  0.0000  0.4562  0.3929  1.0
  As  As2  4  0.0000  0.0533  0.1899  1.0
  As  As3  4  0.0000  0.1905  0.9452  1.0
  O  O4  4  0.0000  0.4018  0.0761  1.0
]