data_[Ba6Gd3Bi3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Gd  1.2000  1.8000  1.0750
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [6.2091]
_cell_length_b [6.2091]
_cell_length_c [15.0469]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Ba2GdBiO6]
_chemical_formula_sum '[Ba6 Gd3 Bi3 O18]'
_cell_volume [502.3783]
_cell_formula_units_Z [3]
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
[
  Ba  Ba0  6  0.0000  0.0000  0.2511  1.0
  Gd  Gd1  3  0.0000  0.0000  0.0000  1.0
  Bi  Bi2  3  -0.0000  0.0000  0.5000  1.0
  O  O3  18  0.0115  0.5583  0.2483  1.0
]