data_[Ce2Pm2Se4N2]
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
  Se  2.5500  1.1500  1.0133
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [P4/nmm]
_cell_length_a [4.0528]
_cell_length_b [4.0528]
_cell_length_c [14.8956]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [129]
_chemical_formula_structural [CePmSe2N]
_chemical_formula_sum '[Ce2 Pm2 Se4 N2]'
_cell_volume [244.6648]
_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  0.5000  0.4257  1
  Pm  Pm1  2  0.0000  0.5000  0.8691  1
  Se  Se2  2  0.0000  0.5000  0.0885  1
  Se  Se3  2  0.0000  0.5000  0.6868  1
  N  N4  2  0.0000  0.0000  0.5000  1
]