data_[Rb4Tl4S4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Tl  1.6200  1.9000  1.3325
  S  2.5800  1.0000  0.8800
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [6.1935]
_cell_length_b [10.5622]
_cell_length_c [8.3155]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [RbTlSO4]
_chemical_formula_sum '[Rb4 Tl4 S4 O16]'
_cell_volume [543.9739]
_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  0.1857  0.7500  1.0
  Tl  Tl1  4  0.0000  0.5000  0.0000  1.0
  S  S2  4  0.0000  0.1556  0.2500  1.0
  O  O3  8  0.0000  0.2366  0.1032  1.0
  O  O4  8  0.1976  0.0722  0.2500  1.0
]