data_[Ag4Hg4Se6]
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
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [7.3184]
_cell_length_b [7.3027]
_cell_length_c [7.6638]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.9013]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Ag2Hg2Se3]
_chemical_formula_sum '[Ag4 Hg4 Se6]'
_cell_volume [382.6331]
_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  4  0.3293  0.1340  0.2985  1
  Hg  Hg1  4  0.0637  0.6621  0.1846  1
  Se  Se2  4  0.3376  0.0467  0.6406  1
  Se  Se3  2  0.0000  0.0000  0.0000  1
]