data_[Ag2Hg2I4]
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 [P2/m]
_cell_length_a [7.3388]
_cell_length_b [4.7929]
_cell_length_c [9.8028]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.7639]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [AgHgI2]
_chemical_formula_sum '[Ag2 Hg2 I4]'
_cell_volume [326.4801]
_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  0.0776  0.5000  0.8700  1.0
  Hg  Hg1  2  0.4675  0.0000  0.6279  1.0
  I  I2  2  0.1343  0.0000  0.7294  1.0
  I  I3  2  0.3302  0.5000  0.1672  1.0
]