data_[Na3Ag6I3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ag  1.9300  1.6000  1.0867
  I  2.6600  1.4000  1.2733
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.6064]
_cell_length_b [5.6064]
_cell_length_c [15.5218]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [NaAg2IO6]
_chemical_formula_sum '[Na3 Ag6 I3 O18]'
_cell_volume [422.5086]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.5135  1.0
  Ag  Ag1  3  0.0000  0.0000  0.3095  1.0
  Ag  Ag2  3  0.0000  0.0000  0.7857  1.0
  I  I3  3  0.0000  0.0000  0.9876  1.0
  O  O4  9  0.0122  0.7340  0.9117  1.0
  O  O5  9  0.0264  0.2978  0.0560  1.0
]