data_[Pm12Nd16Tl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Nd  1.1400  1.8500  1.2765
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [16.1786]
_cell_length_b [11.7211]
_cell_length_c [6.2479]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.2684]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Pm3(Nd2Tl)2]
_chemical_formula_sum '[Pm12 Nd16 Tl8]'
_cell_volume [1177.7027]
_cell_formula_units_Z [4]
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  8  0.1700  0.1383  0.0779  1
  Pm  Pm1  4  0.0000  0.3885  0.2500  1
  Nd  Nd2  8  0.0629  0.1300  0.5373  1
  Nd  Nd3  8  0.2069  0.3850  0.4024  1
  Tl  Tl4  8  0.1058  0.3655  0.8260  1
]