data_[Na2Sr4I2O12]
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
  I  2.6600  1.4000  1.2733
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [5.8398]
_cell_length_b [5.8815]
_cell_length_c [10.1124]
_cell_angle_alpha [90.0000]
_cell_angle_beta [125.3161]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [NaSr2IO6]
_chemical_formula_sum '[Na2 Sr4 I2 O12]'
_cell_volume [283.4096]
_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  0.5000  0.0000  0.5000  1.0
  Sr  Sr1  4  0.2574  0.0376  0.7505  1.0
  I  I2  2  0.0000  0.0000  0.0000  1.0
  O  O3  4  0.1519  0.0234  0.2245  1.0
  O  O4  4  0.2228  0.7362  0.0413  1.0
  O  O5  4  0.2969  0.1873  0.0349  1.0
]