data_[Pm2Sm12Tl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Sm  1.1700  1.8500  1.2290
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [I-42m]
_cell_length_a [7.9388]
_cell_length_b [7.9388]
_cell_length_c [11.9307]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [121]
_chemical_formula_structural [Pm(Sm3Tl2)2]
_chemical_formula_sum '[Pm2 Sm12 Tl8]'
_cell_volume [751.9341]
_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  0.0000  0.0000  0.0000  1
  Sm  Sm1  8  0.1868  0.1868  0.2854  1
  Sm  Sm2  4  0.0000  0.5000  0.0000  1
  Tl  Tl3  8  0.1688  0.8312  0.4306  1
]