data_[La4Y2Er2Tl4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  La  1.1000  1.9500  1.1720
  Y  1.2200  1.8000  1.0400
  Er  1.2400  1.7500  1.0300
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [5.1130]
_cell_length_b [10.2642]
_cell_length_c [7.0314]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [La2YErTl2]
_chemical_formula_sum '[La4 Y2 Er2 Tl4]'
_cell_volume [369.0127]
_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
[
  La  La0  2  0.0000  0.1759  0.3101  1.0
  La  La1  2  0.5000  0.0632  0.0900  1.0
  Y  Y2  2  0.0000  0.4574  0.9589  1.0
  Er  Er3  2  0.5000  0.3059  0.6661  1.0
  Tl  Tl4  2  0.0000  0.1511  0.7967  1.0
  Tl  Tl5  2  0.5000  0.3908  0.2239  1.0
]