data_[Tb20Sm8Tm12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Sm  1.1700  1.8500  1.2290
  Tm  1.2500  1.7500  1.0950
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [10.6530]
_cell_length_b [15.7891]
_cell_length_c [9.4002]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.0539]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Tb5Sm2Tm3]
_chemical_formula_sum '[Tb20 Sm8 Tm12]'
_cell_volume [1309.9831]
_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  0.2306  0.6148  0.2163  1
  Tb  Tb1  4  0.0000  0.2322  0.7500  1
  Tb  Tb2  4  0.0000  0.2722  0.2500  1
  Tb  Tb3  4  0.0000  0.4693  0.2500  1
  Sm  Sm4  8  0.1406  0.1245  0.5465  1
  Tm  Tm5  8  0.1583  0.3812  0.0475  1
  Tm  Tm6  4  0.0000  0.0252  0.7500  1
]