data_[Sr36Bi18O3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  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 [14.2143]
_cell_length_b [14.2143]
_cell_length_c [13.4684]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Sr12Bi6O]
_chemical_formula_sum '[Sr36 Bi18 O3]'
_cell_volume [2356.6622]
_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
[
  Sr  Sr0  18  0.0364  0.2085  0.3942  1
  Sr  Sr1  18  0.0526  0.1816  0.8840  1
  Bi  Bi2  18  0.0472  0.4391  0.3149  1
  O  O3  3  0.0000  0.0000  0.0000  1
]