data_[Er2Bi2N4O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Bi  2.0200  1.6000  1.0350
  N  3.0400  0.6500  0.6300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P1]
_cell_length_a [5.7122]
_cell_length_b [5.7855]
_cell_length_c [6.0289]
_cell_angle_alpha [61.4956]
_cell_angle_beta [62.6958]
_cell_angle_gamma [60.4787]
_symmetry_Int_Tables_number [1]
_chemical_formula_structural [ErBiN2O]
_chemical_formula_sum '[Er2 Bi2 N4 O2]'
_cell_volume [145.7008]
_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
[
  Er  Er0  1  0.3622  0.3627  0.9127  1
  Er  Er1  1  0.6420  0.6400  0.0827  1
  Bi  Bi2  1  0.1448  0.1488  0.5636  1
  Bi  Bi3  1  0.8694  0.8329  0.4325  1
  N  N4  1  0.0313  0.7767  0.7371  1
  N  N5  1  0.2418  0.5416  0.2491  1
  N  N6  1  0.5423  0.9673  0.2636  1
  N  N7  1  0.7667  0.4506  0.7464  1
  O  O8  1  0.4408  0.0368  0.7700  1
  O  O9  1  0.9586  0.2426  0.2422  1
]