data_[Ce8Er4Zr4N20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ce  1.1200  1.8500  1.0800
  Er  1.2400  1.7500  1.0300
  Zr  1.3300  1.5500  0.8600
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.5602]
_cell_length_b [13.7700]
_cell_length_c [11.2633]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Ce2ErZrN5]
_chemical_formula_sum '[Ce8 Er4 Zr4 N20]'
_cell_volume [552.1763]
_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
[
  Ce  Ce0  4  0.0000  0.1316  0.7099  1.0
  Ce  Ce1  4  0.0000  0.1353  0.2392  1.0
  Er  Er2  4  0.0000  0.2369  0.9862  1.0
  Zr  Zr3  4  0.0000  0.4902  0.4806  1.0
  N  N4  4  0.0000  0.0720  0.0375  1.0
  N  N5  4  0.0000  0.2778  0.6397  1.0
  N  N6  4  0.0000  0.2854  0.3457  1.0
  N  N7  4  0.0000  0.3838  0.0796  1.0
  N  N8  4  0.0000  0.4597  0.8055  1.0
]