data_[Ag2Hg2Sb2Se4]
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
  Sb  2.0500  1.4500  0.8300
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.2282]
_cell_length_b [5.8581]
_cell_length_c [8.7715]
_cell_angle_alpha [90.0000]
_cell_angle_beta [94.1644]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [AgHgSbSe2]
_chemical_formula_sum '[Ag2 Hg2 Sb2 Se4]'
_cell_volume [319.1880]
_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  0.4188  0.7500  0.8787  1.0
  Hg  Hg1  2  0.0375  0.2500  0.0923  1.0
  Sb  Sb2  2  0.3254  0.7500  0.3716  1.0
  Se  Se3  2  0.3866  0.2500  0.3899  1.0
  Se  Se4  2  0.4017  0.2500  0.8337  1.0
]