data_[Tb8Er20Tm8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Er  1.2400  1.7500  1.0300
  Tm  1.2500  1.7500  1.0950
]
_symmetry_space_group_name_H-M [Ima2]
_cell_length_a [14.7289]
_cell_length_b [11.5658]
_cell_length_c [6.6401]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [46]
_chemical_formula_structural [Tb2Er5Tm2]
_chemical_formula_sum '[Tb8 Er20 Tm8]'
_cell_volume [1131.1392]
_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  0.0000  0.0000  0.0032  1
  Tb  Tb1  4  0.2500  0.0142  0.1114  1
  Er  Er2  8  0.0531  0.7407  0.7100  1
  Er  Er3  8  0.1424  0.2395  0.8920  1
  Er  Er4  4  0.2500  0.7422  0.3995  1
  Tm  Tm5  8  0.1275  0.5078  0.0590  1
]