data_[Ce2Pm20Nd8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ce  1.1200  1.8500  1.0800
  Pm  1.1300  1.8500  1.1100
  Nd  1.1400  1.8500  1.2765
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [11.4417]
_cell_length_b [11.4417]
_cell_length_c [8.0844]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Ce(Pm5Nd2)2]
_chemical_formula_sum '[Ce2 Pm20 Nd8]'
_cell_volume [1058.3350]
_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
[
  Ce  Ce0  2  0.0000  0.0000  0.0000  1
  Pm  Pm1  16  0.0000  0.2092  0.2913  1
  Pm  Pm2  4  0.0000  0.5000  0.2500  1
  Nd  Nd3  8  0.2263  0.2263  0.0000  1
]