data_[La8Tb4Hg4Se20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  La  1.1000  1.9500  1.1720
  Tb  1.1000  1.7500  0.9815
  Hg  2.0000  1.5000  1.2450
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.1745]
_cell_length_b [17.8795]
_cell_length_c [12.8612]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [La2TbHgSe5]
_chemical_formula_sum '[La8 Tb4 Hg4 Se20]'
_cell_volume [959.9220]
_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
[
  La  La0  4  0.0000  0.1195  0.6841  1
  La  La1  4  0.0000  0.1322  0.3079  1
  Tb  Tb2  4  0.0000  0.1973  0.0069  1
  Hg  Hg3  4  0.0000  0.4589  0.4600  1
  Se  Se4  4  0.0000  0.0444  0.0860  1
  Se  Se5  4  0.0000  0.2906  0.6637  1
  Se  Se6  4  0.0000  0.3065  0.3472  1
  Se  Se7  4  0.0000  0.3564  0.0002  1
  Se  Se8  4  0.0000  0.4965  0.7679  1
]