data_[Pm4Y2Tl2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  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 [P2_1/m]
_cell_length_a [5.9467]
_cell_length_b [3.4759]
_cell_length_c [12.8275]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.2910]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Pm2YTl]
_chemical_formula_sum '[Pm4 Y2 Tl2]'
_cell_volume [265.1407]
_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
[
  Pm  Pm0  2  0.2503  0.7500  0.1874  1
  Pm  Pm1  2  0.2517  0.2500  0.9358  1
  Y  Y2  2  0.2448  0.2500  0.6572  1
  Tl  Tl3  2  0.2548  0.7500  0.4424  1
]