data_[Tb4Nd6Er6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Nd  1.1400  1.8500  1.2765
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [5.0088]
_cell_length_b [5.0953]
_cell_length_c [20.3575]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Tb2(NdEr)3]
_chemical_formula_sum '[Tb4 Nd6 Er6]'
_cell_volume [519.5560]
_cell_formula_units_Z [2]
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  0.5000  0.2495  1.0
  Nd  Nd1  4  0.0000  0.0000  0.1249  1.0
  Nd  Nd2  2  0.0000  0.5000  0.0000  1.0
  Er  Er3  4  0.0000  0.0000  0.3740  1.0
  Er  Er4  2  0.0000  0.5000  0.5000  1.0
]