data_[Tb16Cu2Ag4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Cu  1.9000  1.3500  0.8200
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [17.6879]
_cell_length_b [5.2020]
_cell_length_c [6.8540]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.4021]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Tb8CuAg2]
_chemical_formula_sum '[Tb16 Cu2 Ag4]'
_cell_volume [604.9983]
_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  0.0269  0.0000  0.7816  1
  Tb  Tb1  4  0.0907  0.5000  0.4486  1
  Tb  Tb2  4  0.1618  0.5000  0.9739  1
  Tb  Tb3  4  0.1995  0.0000  0.3143  1
  Cu  Cu4  2  0.0000  0.5000  0.0000  1
  Ag  Ag5  4  0.1846  0.0000  0.7259  1
]