data_[Pr4Sm2Er2Tl4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Sm  1.1700  1.8500  1.2290
  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 [5.1699]
_cell_length_b [10.2567]
_cell_length_c [6.9878]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [Pr2SmErTl2]
_chemical_formula_sum '[Pr4 Sm2 Er2 Tl4]'
_cell_volume [370.5324]
_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
[
  Pr  Pr0  2  0.0000  0.1866  0.3333  1.0
  Pr  Pr1  2  0.5000  0.0458  0.0598  1.0
  Sm  Sm2  2  0.0000  0.4575  0.9579  1.0
  Er  Er3  2  0.5000  0.3147  0.6749  1.0
  Tl  Tl4  2  0.0000  0.1460  0.7974  1.0
  Tl  Tl5  2  0.5000  0.3774  0.2223  1.0
]