data_[Tb2Dy8Cu8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Dy  1.2200  1.7500  1.1310
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [P4_2/n]
_cell_length_a [8.6112]
_cell_length_b [8.6112]
_cell_length_c [5.9050]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [86]
_chemical_formula_structural [Tb(DyCu)4]
_chemical_formula_sum '[Tb2 Dy8 Cu8]'
_cell_volume [437.8727]
_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  2  0.0000  0.0000  0.0000  1
  Dy  Dy1  8  0.0873  0.3059  0.5987  1
  Cu  Cu2  8  0.1302  0.2739  0.1235  1
]