data_[Nd4Se2F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Nd  1.1400  1.8500  1.2765
  Se  2.5500  1.1500  1.0133
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P4_2/mnm]
_cell_length_a [7.5563]
_cell_length_b [7.5563]
_cell_length_c [3.9209]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [136]
_chemical_formula_structural [Nd2SeF4]
_chemical_formula_sum '[Nd4 Se2 F8]'
_cell_volume [223.8706]
_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
[
  Nd  Nd0  4  0.2207  0.7793  0.0000  1.0
  Se  Se1  2  0.0000  0.0000  0.5000  1.0
  F  F2  8  0.0875  0.3291  0.0000  1.0
]