data_[Tb16Nd4Hg8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Nd  1.1400  1.8500  1.2765
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [17.7184]
_cell_length_b [3.5730]
_cell_length_c [15.4470]
_cell_angle_alpha [90.0000]
_cell_angle_beta [117.0622]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Tb4NdHg2]
_chemical_formula_sum '[Tb16 Nd4 Hg8]'
_cell_volume [870.8571]
_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
[
  Tb  Tb0  4  0.0318  0.0000  0.6535  1
  Tb  Tb1  4  0.1545  0.5000  0.3807  1
  Tb  Tb2  4  0.1761  0.0000  0.0241  1
  Tb  Tb3  4  0.2331  0.5000  0.7238  1
  Nd  Nd4  4  0.0407  0.0000  0.1442  1
  Hg  Hg5  4  0.1195  0.5000  0.8393  1
  Hg  Hg6  4  0.1416  0.0000  0.5408  1
]