data_[Tb8Er4Ag4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Er  1.2400  1.7500  1.0300
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [11.4966]
_cell_length_b [6.9938]
_cell_length_c [6.7544]
_cell_angle_alpha [90.0000]
_cell_angle_beta [123.6474]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Tb2ErAg]
_chemical_formula_sum '[Tb8 Er4 Ag4]'
_cell_volume [452.1027]
_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  0.2044  0.0364  0.6719  1.0
  Er  Er1  4  0.0000  0.3378  0.7500  1.0
  Ag  Ag2  4  0.0000  0.2545  0.2500  1.0
]