data_[Na8Sr4Ag4I20]
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
  Ag  1.9300  1.6000  1.0867
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.6402]
_cell_length_b [21.2162]
_cell_length_c [14.9487]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Na2SrAgI5]
_chemical_formula_sum '[Na8 Sr4 Ag4 I20]'
_cell_volume [1471.6714]
_cell_formula_units_Z [4]
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  4  0.0000  0.0674  0.6426  1.0
  Na  Na1  4  0.0000  0.1095  0.3325  1.0
  Sr  Sr2  4  0.0000  0.2115  0.0419  1.0
  Ag  Ag3  4  0.0000  0.4226  0.4173  1.0
  I  I4  4  0.0000  0.0556  0.0259  1.0
  I  I5  4  0.0000  0.2885  0.3864  1.0
  I  I6  4  0.0000  0.3034  0.6961  1.0
  I  I7  4  0.0000  0.3682  0.0158  1.0
  I  I8  4  0.0000  0.4991  0.7655  1.0
]