data_[Rb4Ta4Bi8O24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ta  1.5000  1.4500  0.8200
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [10.9944]
_cell_length_b [12.7503]
_cell_length_c [7.3734]
_cell_angle_alpha [90.0000]
_cell_angle_beta [116.2254]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [RbTa(BiO3)2]
_chemical_formula_sum '[Rb4 Ta4 Bi8 O24]'
_cell_volume [927.2238]
_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  0.1099  0.7500  1
  Ta  Ta1  4  0.0000  0.1795  0.2500  1
  Bi  Bi2  8  0.1288  0.4165  0.6611  1
  O  O3  8  0.0754  0.2599  0.4869  1
  O  O4  8  0.1030  0.4529  0.9582  1
  O  O5  8  0.1257  0.0895  0.2253  1
]