data_[Rb4Ce4P4O20]
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
  P  2.1900  1.0000  0.5500
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [7.4009]
_cell_length_b [9.8818]
_cell_length_c [8.0192]
_cell_angle_alpha [90.0000]
_cell_angle_beta [114.7196]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [RbCePO5]
_chemical_formula_sum '[Rb4 Ce4 P4 O20]'
_cell_volume [532.7339]
_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  0.3375  0.7500  1.0
  Ce  Ce1  4  0.0000  0.0000  0.0000  1.0
  P  P2  4  0.0000  0.3117  0.2500  1.0
  O  O3  8  0.0737  0.2197  0.1315  1.0
  O  O4  8  0.1731  0.4047  0.3774  1.0
  O  O5  4  0.0000  0.0620  0.7500  1.0
]