data_[Rb8W8O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  W  2.3600  1.3500  0.7667
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Ima2]
_cell_length_a [16.3853]
_cell_length_b [6.0102]
_cell_length_c [6.0373]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [46]
_chemical_formula_structural [Rb2W2O5]
_chemical_formula_sum '[Rb8 W8 O20]'
_cell_volume [594.5486]
_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  8  0.1125  0.5139  0.0037  1
  W  W1  4  0.0000  0.0000  0.9914  1
  W  W2  4  0.2500  0.0591  0.0375  1
  O  O3  8  0.0050  0.2488  0.2460  1
  O  O4  8  0.1344  0.5213  0.4908  1
  O  O5  4  0.2500  0.1802  0.3262  1
]