data_[La2Pm2Nd8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  La  1.1000  1.9500  1.1720
  Pm  1.1300  1.8500  1.1100
  Nd  1.1400  1.8500  1.2765
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [5.2325]
_cell_length_b [15.6686]
_cell_length_c [5.2095]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [LaPmNd4]
_chemical_formula_sum '[La2 Pm2 Nd8]'
_cell_volume [427.1072]
_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
[
  La  La0  2  0.0000  0.0000  0.0000  1
  Pm  Pm1  2  0.0000  0.5000  0.5000  1
  Nd  Nd2  4  0.0000  0.1669  0.5000  1
  Nd  Nd3  4  0.0000  0.3325  0.0000  1
]