data_[Sr2Bi4O8]
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 [P2_1/m]
_cell_length_a [6.5238]
_cell_length_b [4.3689]
_cell_length_c [21.5393]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Sr(BiO2)2]
_chemical_formula_sum '[Sr2 Bi4 O8]'
_cell_volume [613.9124]
_cell_formula_units_Z [2]
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  2  0.2554  0.7500  0.0069  1
  Bi  Bi1  2  0.0845  0.2500  0.8559  1
  Bi  Bi2  2  0.3517  0.2500  0.1507  1
  O  O3  2  0.0189  0.2500  0.1518  1
  O  O4  2  0.1117  0.2500  0.9510  1
  O  O5  2  0.2502  0.7500  0.1400  1
  O  O6  2  0.4235  0.2500  0.0577  1
]