data_[Tb8Sn4Te20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Sn  1.9600  1.4500  0.8300
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [6.2455]
_cell_length_b [15.0407]
_cell_length_c [13.8831]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Tb2SnTe5]
_chemical_formula_sum '[Tb8 Sn4 Te20]'
_cell_volume [1304.1393]
_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  8  0.0000  0.1696  0.5680  1
  Sn  Sn1  4  0.0000  0.1951  0.2500  1
  Te  Te2  8  0.0000  0.0325  0.0988  1
  Te  Te3  8  0.0000  0.3196  0.0827  1
  Te  Te4  4  0.0000  0.2802  0.7500  1
]