data_[Na2Tl2B8]
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
  B  2.0400  0.8500  0.4100
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [3.1226]
_cell_length_b [5.2751]
_cell_length_c [8.8360]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [NaTlB4]
_chemical_formula_sum '[Na2 Tl2 B8]'
_cell_volume [145.5490]
_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  0.0000  0.0000  0.0000  1
  Tl  Tl1  2  0.0000  0.0000  0.5000  1
  B  B2  8  0.0000  0.3282  0.2559  1
]