data_[Rb4Nb4W4O24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Nb  1.6000  1.4500  0.8200
  W  2.3600  1.3500  0.7667
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [7.4122]
_cell_length_b [7.4805]
_cell_length_c [10.5602]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [RbNbWO6]
_chemical_formula_sum '[Rb4 Nb4 W4 O24]'
_cell_volume [585.5329]
_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  0.2500  0.1261  1.0
  Nb  Nb1  4  0.0000  0.0000  0.5000  1.0
  W  W2  4  0.2500  0.2500  0.7500  1.0
  O  O3  16  0.1904  0.0675  0.6272  1.0
  O  O4  4  0.0000  0.2500  0.4363  1.0
  O  O5  4  0.0000  0.2500  0.8090  1.0
]