data_[Tb12Sm8Er4]
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
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [17.0669]
_cell_length_b [5.6509]
_cell_length_c [9.7351]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.7050]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Tb3Sm2Er]
_chemical_formula_sum '[Tb12 Sm8 Er4]'
_cell_volume [771.8540]
_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  0.0013  0.0000  0.6693  1
  Tb  Tb1  4  0.1245  0.5000  0.6193  1
  Tb  Tb2  4  0.2494  0.5000  0.4099  1
  Sm  Sm3  4  0.0015  0.5000  0.8362  1
  Sm  Sm4  4  0.2492  0.5000  0.0740  1
  Er  Er5  4  0.1250  0.0000  0.1302  1
]