data_[Rb2Na2W2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  W  2.3600  1.3500  0.7667
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.2725]
_cell_length_b [6.4683]
_cell_length_c [7.4987]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.4829]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbNaWO4]
_chemical_formula_sum '[Rb2 Na2 W2 O8]'
_cell_volume [291.7382]
_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  2  0.2805  0.2500  0.0549  1.0
  Na  Na1  2  0.1801  0.2500  0.5147  1.0
  W  W2  2  0.2735  0.7500  0.3411  1.0
  O  O3  4  0.0880  0.5270  0.3058  1.0
  O  O4  2  0.4385  0.7500  0.1770  1.0
  O  O5  2  0.4631  0.7500  0.5734  1.0
]