data_[Rb1Er1S2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Er  1.2400  1.7500  1.0300
  S  2.5800  1.0000  0.8800
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-3]
_cell_length_a [5.3484]
_cell_length_b [5.3484]
_cell_length_c [8.4740]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [147]
_chemical_formula_structural [RbEr(SO4)2]
_chemical_formula_sum '[Rb1 Er1 S2 O8]'
_cell_volume [209.9291]
_cell_formula_units_Z [1]
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  1  0.0000  0.0000  0.0000  1.0
  Er  Er1  1  0.0000  0.0000  0.5000  1.0
  S  S2  2  0.3333  0.6667  0.2769  1.0
  O  O3  6  0.1243  0.7519  0.3396  1.0
  O  O4  2  0.3333  0.6667  0.1048  1.0
]