data_[Rb12Se4O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [7.4386]
_cell_length_b [8.9852]
_cell_length_c [12.8514]
_cell_angle_alpha [90.0000]
_cell_angle_beta [122.9013]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Rb6Se2O]
_chemical_formula_sum '[Rb12 Se4 O2]'
_cell_volume [721.1830]
_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
[
  Rb  Rb0  4  0.1459  0.6456  0.9506  1
  Rb  Rb1  4  0.3031  0.2161  0.9468  1
  Rb  Rb2  4  0.3522  0.5314  0.7605  1
  Se  Se3  4  0.2214  0.6014  0.2598  1
  O  O4  2  0.5000  0.0000  0.5000  1
]