data_[Pm6Sm8Tl4]
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 [C2/m]
_cell_length_a [15.5487]
_cell_length_b [5.0516]
_cell_length_c [7.7379]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.5981]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm3(Sm2Tl)2]
_chemical_formula_sum '[Pm6 Sm8 Tl4]'
_cell_volume [572.5712]
_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  4  0.1159  0.0000  0.6776  1
  Pm  Pm1  2  0.0000  0.0000  0.0000  1
  Sm  Sm2  4  0.0565  0.5000  0.3324  1
  Sm  Sm3  4  0.2205  0.0000  0.3070  1
  Tl  Tl4  4  0.1562  0.5000  0.9977  1
]