data_[Rb8Se4O16]
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 [Ama2]
_cell_length_a [8.5279]
_cell_length_b [10.8349]
_cell_length_c [6.4981]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [40]
_chemical_formula_structural [Rb2SeO4]
_chemical_formula_sum '[Rb8 Se4 O16]'
_cell_volume [600.4201]
_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  0.0000  0.0046  1.0
  Rb  Rb1  4  0.2500  0.1877  0.5114  1.0
  Se  Se2  4  0.2500  0.3479  0.9979  1.0
  O  O3  8  0.0902  0.2585  0.9862  1.0
  O  O4  4  0.2500  0.4309  0.2173  1.0
  O  O5  4  0.2500  0.4459  0.7964  1.0
]