data_[Na8Tl16Sb8O32]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Tl  1.6200  1.9000  1.3325
  Sb  2.0500  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Fddd]
_cell_length_a [6.1471]
_cell_length_b [12.1590]
_cell_length_c [20.2469]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [70]
_chemical_formula_structural [NaTl2SbO4]
_chemical_formula_sum '[Na8 Tl16 Sb8 O32]'
_cell_volume [1513.2970]
_cell_formula_units_Z [8]
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
[
  Na  Na0  8  0.0000  0.0000  0.0000  1
  Tl  Tl1  16  0.0000  0.0000  0.1978  1
  Sb  Sb2  8  0.0000  0.0000  0.5000  1
  O  O3  32  0.0459  0.1475  0.7121  1
]