data_[Na2Sr2Bi2O6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  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 [6.4648]
_cell_length_b [3.5474]
_cell_length_c [8.7544]
_cell_angle_alpha [90.0000]
_cell_angle_beta [93.9252]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaSrBiO3]
_chemical_formula_sum '[Na2 Sr2 Bi2 O6]'
_cell_volume [200.2952]
_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
[
  Na  Na0  2  0.2156  0.7500  0.0117  1.0
  Sr  Sr1  2  0.4155  0.2500  0.6786  1.0
  Bi  Bi2  2  0.0983  0.2500  0.3225  1.0
  O  O3  2  0.0742  0.2500  0.8186  1.0
  O  O4  2  0.2754  0.7500  0.4879  1.0
  O  O5  2  0.3643  0.2500  0.1838  1.0
]