data_[Ba2Na12Tl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Na  0.9300  1.8000  1.1600
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [I-42m]
_cell_length_a [7.9715]
_cell_length_b [7.9715]
_cell_length_c [12.5173]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [121]
_chemical_formula_structural [Ba(Na3Tl2)2]
_chemical_formula_sum '[Ba2 Na12 Tl8]'
_cell_volume [795.4132]
_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
[
  Ba  Ba0  2  0.0000  0.0000  0.0000  1.0
  Na  Na1  8  0.1940  0.1940  0.7065  1.0
  Na  Na2  4  0.0000  0.5000  0.0000  1.0
  Tl  Tl3  8  0.1600  0.8400  0.5769  1.0
]