data_[La2Pm4Y2Tl4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  La  1.1000  1.9500  1.1720
  Pm  1.1300  1.8500  1.1100
  Y  1.2200  1.8000  1.0400
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [5.2629]
_cell_length_b [10.2879]
_cell_length_c [6.9081]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [LaPm2YTl2]
_chemical_formula_sum '[La2 Pm4 Y2 Tl4]'
_cell_volume [374.0308]
_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  0.4572  0.4590  1
  Pm  Pm1  2  0.0000  0.1809  0.8307  1
  Pm  Pm2  2  0.5000  0.0456  0.5526  1
  Y  Y3  2  0.5000  0.3085  0.1823  1
  Tl  Tl4  2  0.0000  0.1392  0.2973  1
  Tl  Tl5  2  0.5000  0.3662  0.7237  1
]