data_[Na2Tl2Sb2Te6]
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
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [8.1656]
_cell_length_b [4.7960]
_cell_length_c [10.6171]
_cell_angle_alpha [90.0000]
_cell_angle_beta [94.9287]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaTlSbTe3]
_chemical_formula_sum '[Na2 Tl2 Sb2 Te6]'
_cell_volume [414.2514]
_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
[
  Na  Na0  2  0.0326  0.2500  0.6506  1.0
  Tl  Tl1  2  0.3429  0.2500  0.3781  1.0
  Sb  Sb2  2  0.3265  0.7500  0.8861  1.0
  Te  Te3  2  0.0971  0.2500  0.9488  1.0
  Te  Te4  2  0.2558  0.7500  0.5796  1.0
  Te  Te5  2  0.4546  0.7500  0.1565  1.0
]