data_[Er4As4N8O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  As  2.1800  1.1500  0.6600
  N  3.0400  0.6500  0.6300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [5.3615]
_cell_length_b [7.7819]
_cell_length_c [5.2334]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [ErAsN2O]
_chemical_formula_sum '[Er4 As4 N8 O4]'
_cell_volume [218.3523]
_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
[
  Er  Er0  4  0.0637  0.7500  0.0192  1
  As  As1  4  0.0000  0.0000  0.5000  1
  N  N2  8  0.2006  0.0489  0.8014  1
  O  O3  4  0.0217  0.2500  0.4005  1
]