data_[Na12Er3U9N24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Er  1.2400  1.7500  1.0300
  U  1.3800  1.7500  0.9913
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [6.9735]
_cell_length_b [6.9735]
_cell_length_c [17.0229]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Na4ErU3N8]
_chemical_formula_sum '[Na12 Er3 U9 N24]'
_cell_volume [716.9101]
_cell_formula_units_Z [3]
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
[
  Na  Na0  9  0.0000  0.5000  0.5000  1
  Na  Na1  3  -0.0000  -0.0000  0.5000  1
  Er  Er2  3  -0.0000  -0.0000  0.0000  1
  U  U3  9  0.0000  0.5000  0.0000  1
  N  N4  18  0.0219  0.5109  0.2727  1
  N  N5  6  0.0000  0.0000  0.2714  1
]