data_[Tb12Sm4Tm8]
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 [17.3790]
_cell_length_b [7.0914]
_cell_length_c [6.1366]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.1016]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Tb3SmTm2]
_chemical_formula_sum '[Tb12 Sm4 Tm8]'
_cell_volume [756.2804]
_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  0.1679  0.1255  0.4163  1
  Tb  Tb1  4  0.0000  0.3758  0.2500  1
  Sm  Sm2  4  0.0000  0.1259  0.7500  1
  Tm  Tm3  8  0.1674  0.3757  0.9177  1
]