data_[Tb8Er4Tl2]
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 [P2_1/m]
_cell_length_a [5.6327]
_cell_length_b [6.7602]
_cell_length_c [11.6413]
_cell_angle_alpha [90.0000]
_cell_angle_beta [102.7313]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Tb4Er2Tl]
_chemical_formula_sum '[Tb8 Er4 Tl2]'
_cell_volume [432.3793]
_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  4  0.3338  0.0108  0.7064  1
  Tb  Tb1  2  0.1145  0.7500  0.1424  1
  Tb  Tb2  2  0.2239  0.2500  0.4128  1
  Er  Er3  2  0.2124  0.7500  0.4373  1
  Er  Er4  2  0.4526  0.2500  0.0216  1
  Tl  Tl5  2  0.0123  0.2500  0.1410  1
]