data_[Ba6Tb3Tl6O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Tb  1.1000  1.7500  0.9815
  Tl  1.6200  1.9000  1.3325
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [6.5264]
_cell_length_b [6.5264]
_cell_length_c [18.2912]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Ba2TbTl2O6]
_chemical_formula_sum '[Ba6 Tb3 Tl6 O18]'
_cell_volume [674.7077]
_cell_formula_units_Z [3]
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
[
  Ba  Ba0  6  0.0000  0.0000  0.1994  1
  Tb  Tb1  3  0.0000  0.0000  0.0000  1
  Tl  Tl2  6  0.0000  0.0000  0.3997  1
  O  O3  18  0.0396  0.5198  0.7540  1
]