data_[Tb4Si8Ag4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Si  1.9000  1.1000  0.5400
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [6.7159]
_cell_length_b [4.1910]
_cell_length_c [10.8801]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [TbSi2Ag]
_chemical_formula_sum '[Tb4 Si8 Ag4]'
_cell_volume [306.2356]
_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  0.1523  0.2500  0.8477  1.0
  Si  Si1  4  0.0227  0.2500  0.3354  1.0
  Si  Si2  4  0.1642  0.2500  0.1389  1.0
  Ag  Ag3  4  0.1623  0.2500  0.5530  1.0
]