data_[Sr4Er2Sb2O12]
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
  Sb  2.0500  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [5.8433]
_cell_length_b [5.8982]
_cell_length_c [10.1283]
_cell_angle_alpha [90.0000]
_cell_angle_beta [125.0405]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Sr2ErSbO6]
_chemical_formula_sum '[Sr4 Er2 Sb2 O12]'
_cell_volume [285.8044]
_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  0.2421  0.5323  0.7497  1.0
  Er  Er1  2  0.5000  0.0000  0.0000  1.0
  Sb  Sb2  2  0.0000  0.0000  0.5000  1.0
  O  O3  4  0.1599  0.7267  0.4594  1.0
  O  O4  4  0.2342  0.2032  0.4618  1.0
  O  O5  4  0.3113  0.5199  0.2371  1.0
]