data_[Ag8Hg4I20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ag  1.9300  1.6000  1.0867
  Hg  2.0000  1.5000  1.2450
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [6.6141]
_cell_length_b [14.0776]
_cell_length_c [13.2137]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Ag2HgI5]
_chemical_formula_sum '[Ag8 Hg4 I20]'
_cell_volume [1230.3293]
_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
[
  Ag  Ag0  8  0.0000  0.1597  0.5592  1.0
  Hg  Hg1  4  0.0000  0.2350  0.2500  1.0
  I  I2  8  0.0000  0.0428  0.1238  1.0
  I  I3  8  0.0000  0.3376  0.0660  1.0
  I  I4  4  0.0000  0.2566  0.7500  1.0
]