data_[Ag2Sn2I8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  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 [P2_1/m]
_cell_length_a [15.6385]
_cell_length_b [4.2054]
_cell_length_c [19.7117]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [AgSnI4]
_chemical_formula_sum '[Ag2 Sn2 I8]'
_cell_volume [1296.3685]
_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
[
  Ag  Ag0  2  0.3897  0.2500  0.4898  1
  Sn  Sn1  2  0.1255  0.7500  0.4809  1
  I  I2  2  0.0599  0.2500  0.5911  1
  I  I3  2  0.1893  0.2500  0.3805  1
  I  I4  2  0.2965  0.7500  0.5622  1
  I  I5  2  0.4575  0.7500  0.4064  1
]