data_[Rb4Ba4Er4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ba  0.8900  2.1500  1.4900
  Er  1.2400  1.7500  1.0300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [6.7053]
_cell_length_b [12.9344]
_cell_length_c [5.9627]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.5424]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [RbBaErO3]
_chemical_formula_sum '[Rb4 Ba4 Er4 O12]'
_cell_volume [502.7582]
_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
[
  Rb  Rb0  4  0.0000  0.4315  0.7500  1
  Ba  Ba1  4  0.0000  0.2280  0.2500  1
  Er  Er2  4  0.0000  0.0559  0.7500  1
  O  O3  8  0.1811  0.0600  0.4746  1
  O  O4  4  0.0000  0.2240  0.7500  1
]