data_[Pm18Nd36Tl3]
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 [R-3]
_cell_length_a [12.1852]
_cell_length_b [12.1852]
_cell_length_c [15.4414]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Pm6Nd12Tl]
_chemical_formula_sum '[Pm18 Nd36 Tl3]'
_cell_volume [1985.5513]
_cell_formula_units_Z [3]
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  18  0.0189  0.5900  0.6870  1
  Nd  Nd1  18  0.0045  0.8294  0.8136  1
  Nd  Nd2  18  0.0470  0.1990  0.4162  1
  Tl  Tl3  3  0.0000  0.0000  0.0000  1
]