data_[Rb4Tl4O6]
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
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.4773]
_cell_length_b [3.9336]
_cell_length_c [6.5500]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.7034]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Tl2O3]
_chemical_formula_sum '[Rb4 Tl4 O6]'
_cell_volume [326.9101]
_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
[
  Rb  Rb0  4  0.1222  0.5000  0.8157  1.0
  Tl  Tl1  4  0.1382  0.0000  0.3647  1.0
  O  O2  4  0.2258  0.5000  0.2927  1.0
  O  O3  2  0.0000  0.0000  0.5000  1.0
]