data_[Sr2Bi2I2O4]
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
  I  2.6600  1.4000  1.2733
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [7.5860]
_cell_length_b [4.3536]
_cell_length_c [8.0809]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.3518]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [SrBiIO2]
_chemical_formula_sum '[Sr2 Bi2 I2 O4]'
_cell_volume [258.5519]
_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  0.3376  0.2500  0.0816  1.0
  Bi  Bi1  2  0.3545  0.2500  0.5933  1.0
  I  I2  2  0.0557  0.7500  0.7804  1.0
  O  O3  2  0.4698  0.7500  0.5923  1.0
  O  O4  2  0.4891  0.7500  0.1480  1.0
]