data_[Tb8Zn20Cu4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Zn  1.6500  1.3500  0.8800
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [4.2703]
_cell_length_b [16.0012]
_cell_length_c [8.8209]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Tb2Zn5Cu]
_chemical_formula_sum '[Tb8 Zn20 Cu4]'
_cell_volume [602.7294]
_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  0.0000  1
  Tb  Tb1  4  0.0000  0.1951  0.2500  1
  Zn  Zn2  8  0.0000  0.1889  0.6057  1
  Zn  Zn3  8  0.0000  0.3536  0.5254  1
  Zn  Zn4  4  0.0000  0.4004  0.2500  1
  Cu  Cu5  4  0.0000  0.4466  0.7500  1
]