data_[Tb4Nd8Ag4Se20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Nd  1.1400  1.8500  1.2765
  Ag  1.9300  1.6000  1.0867
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.1597]
_cell_length_b [17.5641]
_cell_length_c [12.5489]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [TbNd2AgSe5]
_chemical_formula_sum '[Tb4 Nd8 Ag4 Se20]'
_cell_volume [916.8304]
_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  0.1956  0.0086  1.0
  Nd  Nd1  4  0.0000  0.1102  0.6856  1.0
  Nd  Nd2  4  0.0000  0.1249  0.3055  1.0
  Ag  Ag3  4  0.0000  0.4433  0.4596  1.0
  Se  Se4  4  0.0000  0.0454  0.0796  1.0
  Se  Se5  4  0.0000  0.2866  0.6679  1.0
  Se  Se6  4  0.0000  0.3064  0.3442  1.0
  Se  Se7  4  0.0000  0.3597  0.0001  1.0
  Se  Se8  4  0.0000  0.4978  0.7728  1.0
]