data_[Na24Sr8Tl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sr  0.9500  2.0000  1.3200
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [19.2649]
_cell_length_b [11.0949]
_cell_length_c [7.2016]
_cell_angle_alpha [90.0000]
_cell_angle_beta [100.3120]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Na3SrTl]
_chemical_formula_sum '[Na24 Sr8 Tl8]'
_cell_volume [1514.4126]
_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  0.1679  0.1675  0.0681  1.0
  Na  Na1  8  0.1713  0.1613  0.5876  1.0
  Na  Na2  8  0.1879  0.4962  0.6029  1.0
  Sr  Sr3  4  0.0000  0.0760  0.2500  1.0
  Sr  Sr4  4  0.0000  0.3575  0.7500  1.0
  Tl  Tl5  8  0.0820  0.3517  0.2958  1.0
]