data_[Ag12Hg4Sb4]
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
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [4.2313]
_cell_length_b [16.6434]
_cell_length_c [6.0057]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Ag3HgSb]
_chemical_formula_sum '[Ag12 Hg4 Sb4]'
_cell_volume [422.9384]
_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  0.4014  0.5036  1.0
  Ag  Ag1  4  0.0000  0.1811  0.7500  1.0
  Hg  Hg2  4  0.0000  0.0026  0.7500  1.0
  Sb  Sb3  4  0.0000  0.1956  0.2500  1.0
]