data_[Tb10Er4Tl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Er  1.2400  1.7500  1.0300
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [5.2443]
_cell_length_b [10.5711]
_cell_length_c [13.2225]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Tb5(ErTl2)2]
_chemical_formula_sum '[Tb10 Er4 Tl8]'
_cell_volume [733.0242]
_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  8  0.0000  0.1566  0.2815  1
  Tb  Tb1  2  0.0000  0.0000  0.0000  1
  Er  Er2  4  0.0000  0.5000  0.3305  1
  Tl  Tl3  4  0.0000  0.2925  0.5000  1
  Tl  Tl4  4  0.0000  0.5000  0.1088  1
]