data_[Rb1Al1S2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Al  1.6100  1.2500  0.6750
  S  2.5800  1.0000  0.8800
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [4.7857]
_cell_length_b [4.8990]
_cell_length_c [8.6734]
_cell_angle_alpha [74.2390]
_cell_angle_beta [77.1282]
_cell_angle_gamma [62.1046]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [RbAl(SO4)2]
_chemical_formula_sum '[Rb1 Al1 S2 O8]'
_cell_volume [171.8626]
_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
  Al  Al1  1  0.5000  0.5000  0.5000  1.0
  S  S2  2  0.1898  0.2235  0.3134  1.0
  O  O3  2  0.1658  0.5935  0.6749  1.0
  O  O4  2  0.2625  0.8808  0.3594  1.0
  O  O5  2  0.3131  0.2996  0.4300  1.0
  O  O6  2  0.3201  0.2963  0.1469  1.0
]