data_[Tb2Er2Ag8]
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/m]
_cell_length_a [9.9947]
_cell_length_b [3.7076]
_cell_length_c [7.5328]
_cell_angle_alpha [90.0000]
_cell_angle_beta [112.1854]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [TbErAg4]
_chemical_formula_sum '[Tb2 Er2 Ag8]'
_cell_volume [258.4703]
_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  0.5000  0.0000  1
  Er  Er1  2  0.0000  0.5000  0.5000  1
  Ag  Ag2  4  0.1689  0.0000  0.8312  1
  Ag  Ag3  4  0.1694  0.0000  0.3377  1
]