data_[Rb8Ba4O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ba  0.8900  2.1500  1.4900
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [10.0214]
_cell_length_b [7.5877]
_cell_length_c [7.3362]
_cell_angle_alpha [90.0000]
_cell_angle_beta [94.3340]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Rb2BaO2]
_chemical_formula_sum '[Rb8 Ba4 O8]'
_cell_volume [556.2409]
_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  0.0126  0.7494  0.0246  1.0
  Rb  Rb1  4  0.3195  0.1473  0.4117  1.0
  Ba  Ba2  4  0.3643  0.6130  0.3524  1.0
  O  O3  4  0.1510  0.0478  0.7319  1.0
  O  O4  4  0.4452  0.6031  0.6992  1.0
]