data_[Tb2Ag4Ge2Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Ag  1.9300  1.6000  1.0867
  Ge  2.0100  1.2500  0.7700
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [13.2521]
_cell_length_b [5.4767]
_cell_length_c [5.7756]
_cell_angle_alpha [90.0000]
_cell_angle_beta [114.5935]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [TbAg2GeSe4]
_chemical_formula_sum '[Tb2 Ag4 Ge2 Se8]'
_cell_volume [381.1546]
_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  0.0689  0.0000  0.8600  1.0
  Ag  Ag1  2  0.0605  0.5000  0.2636  1.0
  Ag  Ag2  2  0.2914  0.5000  0.0450  1.0
  Ge  Ge3  2  0.3053  0.0000  0.5206  1.0
  Se  Se4  2  0.0520  0.5000  0.7722  1.0
  Se  Se5  2  0.0854  0.0000  0.3593  1.0
  Se  Se6  2  0.3106  0.0000  0.0894  1.0
  Se  Se7  2  0.3244  0.5000  0.5899  1.0
]