data_[Na3Ag3Sn6I18]
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
  Sn  1.9600  1.4500  0.8300
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [7.9807]
_cell_length_b [7.9807]
_cell_length_c [21.8162]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [NaAg(SnI3)2]
_chemical_formula_sum '[Na3 Ag3 Sn6 I18]'
_cell_volume [1203.3374]
_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  0.1778  1.0
  Ag  Ag1  3  0.0000  0.0000  0.6803  1.0
  Sn  Sn2  3  0.0000  0.0000  0.4927  1.0
  Sn  Sn3  3  0.0000  0.0000  0.9928  1.0
  I  I4  9  0.0230  0.3419  0.7474  1.0
  I  I5  9  0.0296  0.6698  0.2506  1.0
]