data_[Sr4Er2Ir2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Er  1.2400  1.7500  1.0300
  Ir  2.2000  1.3500  0.7650
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [5.8043]
_cell_length_b [5.8409]
_cell_length_c [10.0455]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.9887]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Sr2ErIrO6]
_chemical_formula_sum '[Sr4 Er2 Ir2 O12]'
_cell_volume [279.0108]
_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
[
  Sr  Sr0  4  0.2424  0.5326  0.7493  1
  Er  Er1  2  0.5000  0.0000  0.0000  1
  Ir  Ir2  2  0.0000  0.0000  0.5000  1
  O  O3  4  0.1640  0.7284  0.4630  1
  O  O4  4  0.2353  0.2035  0.4647  1
  O  O5  4  0.3049  0.5154  0.2365  1
]