data_[Tb2Yb2Se6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Yb  1.1000  1.7500  1.0840
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [14.4164]
_cell_length_b [4.0100]
_cell_length_c [18.4599]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [TbYbSe3]
_chemical_formula_sum '[Tb2 Yb2 Se6]'
_cell_volume [1067.1632]
_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
[
  Yb  Yb0  2  0.1867  0.5000  0.5274  1
  Tb  Tb1  2  0.4638  0.5000  0.4734  1
  Se  Se2  2  0.0668  0.5000  0.4061  1
  Se  Se3  2  0.0777  0.0000  0.5935  1
  Se  Se4  2  0.3242  0.0000  0.4997  1
]