data_[Tb6Ag8Hg8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Ag  1.9300  1.6000  1.0867
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [3.3793]
_cell_length_b [4.9012]
_cell_length_c [30.4878]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Tb3(AgHg)4]
_chemical_formula_sum '[Tb6 Ag8 Hg8]'
_cell_volume [504.9494]
_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
[
  Tb  Tb0  4  0.0000  0.0000  0.1394  1.0
  Tb  Tb1  2  0.0000  0.5000  0.0000  1.0
  Ag  Ag2  4  0.0000  0.0000  0.4076  1.0
  Ag  Ag3  4  0.0000  0.5000  0.2653  1.0
  Hg  Hg4  4  0.0000  0.0000  0.3150  1.0
  Hg  Hg5  4  0.0000  0.5000  0.4523  1.0
]