data_[Na3I1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [Pmm2]
_cell_length_a [4.3372]
_cell_length_b [4.3666]
_cell_length_c [8.2478]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [25]
_chemical_formula_structural [Na3I]
_chemical_formula_sum '[Na3 I1]'
_cell_volume [156.2027]
_cell_formula_units_Z [1]
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  1  0.0000  0.5000  0.3045  1
  Na  Na1  1  0.5000  0.0000  0.5168  1
  Na  Na2  1  0.5000  0.5000  0.8600  1
  I  I3  1  0.0000  0.0000  0.9854  1
]