data_[Rb4Tm2Tl2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Tm  1.2500  1.7500  1.0950
  Tl  1.6200  1.9000  1.3325
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I-4]
_cell_length_a [6.2900]
_cell_length_b [6.2900]
_cell_length_c [8.7779]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [82]
_chemical_formula_structural [Rb2TmTlO4]
_chemical_formula_sum '[Rb4 Tm2 Tl2 O8]'
_cell_volume [347.2858]
_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  2  0.0000  0.0000  0.0000  1
  Rb  Rb1  2  0.0000  0.5000  0.7500  1
  Tm  Tm2  2  0.0000  0.0000  0.5000  1
  Tl  Tl3  2  0.0000  0.5000  0.2500  1
  O  O4  8  0.1535  0.7584  0.3738  1
]