data_[Rb3Ta2Bi1O9]
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 [P-3m1]
_cell_length_a [5.8519]
_cell_length_b [5.8519]
_cell_length_c [7.1742]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [164]
_chemical_formula_structural [Rb3Ta2BiO9]
_chemical_formula_sum '[Rb3 Ta2 Bi1 O9]'
_cell_volume [212.7623]
_cell_formula_units_Z [1]
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  0.3333  0.6667  0.3357  1.0
  Rb  Rb1  1  0.0000  0.0000  0.0000  1.0
  Ta  Ta2  2  0.3333  0.6667  0.8402  1.0
  Bi  Bi3  1  0.0000  0.0000  0.5000  1.0
  O  O4  6  0.1727  0.3455  0.6764  1.0
  O  O5  3  0.0000  0.5000  0.0000  1.0
]