data_[Tb12Pm20Tm8]
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
  Tm  1.2500  1.7500  1.0950
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [10.6883]
_cell_length_b [14.9526]
_cell_length_c [9.9339]
_cell_angle_alpha [90.0000]
_cell_angle_beta [122.5344]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Tb3Pm5Tm2]
_chemical_formula_sum '[Tb12 Pm20 Tm8]'
_cell_volume [1338.4648]
_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  8  0.1496  0.3745  0.0554  1
  Tb  Tb1  4  0.0000  0.0238  0.7500  1
  Pm  Pm2  8  0.2409  0.1204  0.2354  1
  Pm  Pm3  4  0.0000  0.2276  0.7500  1
  Pm  Pm4  4  0.0000  0.2693  0.2500  1
  Pm  Pm5  4  0.0000  0.4779  0.2500  1
  Tm  Tm6  8  0.1557  0.1220  0.5554  1
]