data_[Tb20Ho12Er4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Ho  1.2300  1.7500  1.0410
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [15.0349]
_cell_length_b [11.4081]
_cell_length_c [9.8078]
_cell_angle_alpha [90.0000]
_cell_angle_beta [129.9455]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Tb5Ho3Er]
_chemical_formula_sum '[Tb20 Ho12 Er4]'
_cell_volume [1289.6940]
_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  0.2520  0.7460  1
  Tb  Tb1  4  0.0000  0.2564  0.0000  1
  Tb  Tb2  4  0.2227  0.0000  0.0404  1
  Tb  Tb3  4  0.2246  0.5000  0.2347  1
  Ho  Ho4  4  0.0097  0.5000  0.8200  1
  Ho  Ho5  4  0.0184  0.0000  0.3583  1
  Ho  Ho6  2  0.0000  0.0000  0.0000  1
  Ho  Ho7  2  0.0000  0.5000  0.5000  1
  Er  Er8  4  0.2480  0.5000  0.5979  1
]