data_[Eu4Er4N4O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Eu  1.2000  1.8500  1.1985
  Er  1.2400  1.7500  1.0300
  N  3.0400  0.6500  0.6300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pca2_1]
_cell_length_a [6.5645]
_cell_length_b [7.9088]
_cell_length_c [5.6976]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [29]
_chemical_formula_structural [EuErNO]
_chemical_formula_sum '[Eu4 Er4 N4 O4]'
_cell_volume [295.8059]
_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
[
  Eu  Eu0  4  0.0829  0.1244  0.0136  1
  Er  Er1  4  0.0853  0.6181  0.9944  1
  N  N2  4  0.0553  0.1557  0.5832  1
  O  O3  4  0.0952  0.6029  0.6111  1
]