data_[Na3Tl6Sb3]
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
]
_symmetry_space_group_name_H-M [R3m]
_cell_length_a [5.5195]
_cell_length_b [5.5195]
_cell_length_c [15.1245]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [160]
_chemical_formula_structural [NaTl2Sb]
_chemical_formula_sum '[Na3 Tl6 Sb3]'
_cell_volume [399.0303]
_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
[
  Na  Na0  3  0.0000  0.0000  0.4888  1.0
  Tl  Tl1  3  0.0000  0.0000  0.0437  1.0
  Tl  Tl2  3  0.0000  0.0000  0.2657  1.0
  Sb  Sb3  3  0.0000  0.0000  0.7018  1.0
]