data_[Tb4Pm10Hg8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Pm  1.1300  1.8500  1.1100
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [22.5309]
_cell_length_b [3.7056]
_cell_length_c [8.2545]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.6591]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Tb2Pm5Hg4]
_chemical_formula_sum '[Tb4 Pm10 Hg8]'
_cell_volume [644.8475]
_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  0.2091  0.5000  0.6328  1
  Pm  Pm1  4  0.0850  0.0000  0.7603  1
  Pm  Pm2  4  0.1302  0.0000  0.2461  1
  Pm  Pm3  2  0.0000  0.5000  0.0000  1
  Hg  Hg4  4  0.0520  0.5000  0.4187  1
  Hg  Hg5  4  0.2000  0.5000  0.0416  1
]