data_[La4Pr8Nd4Se16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  La  1.1000  1.9500  1.1720
  Pr  1.1300  1.8500  1.0600
  Nd  1.1400  1.8500  1.2765
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [8.5378]
_cell_length_b [8.5437]
_cell_length_c [12.0761]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [LaPr2NdSe4]
_chemical_formula_sum '[La4 Pr8 Nd4 Se16]'
_cell_volume [880.8808]
_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
[
  La  La0  4  0.0000  0.0000  0.5000  1
  Pr  Pr1  4  0.0000  0.0000  0.0000  1
  Pr  Pr2  4  0.2500  0.2500  0.2500  1
  Nd  Nd3  4  0.2500  0.2500  0.7500  1
  Se  Se4  8  0.0000  0.0021  0.7504  1
  Se  Se5  8  0.2491  0.2500  0.9989  1
]