data_[Tb1Er1Ag2S4]
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
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [6.5650]
_cell_length_b [4.0271]
_cell_length_c [6.9600]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.7787]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [TbEr(AgS2)2]
_chemical_formula_sum '[Tb1 Er1 Ag2 S4]'
_cell_volume [173.1533]
_cell_formula_units_Z [1]
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  1  0.0000  0.0000  0.0000  1.0
  Er  Er1  1  0.0000  0.5000  0.5000  1.0
  Ag  Ag2  1  0.5000  0.0000  0.5000  1.0
  Ag  Ag3  1  0.5000  0.5000  0.0000  1.0
  S  S4  2  0.2388  0.0000  0.7401  1.0
  S  S5  2  0.2399  0.5000  0.2461  1.0
]