data_[K8Tl4Bi8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Tl  1.6200  1.9000  1.3325
  Bi  2.0200  1.6000  1.0350
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.7245]
_cell_length_b [5.6693]
_cell_length_c [12.4014]
_cell_angle_alpha [90.0000]
_cell_angle_beta [117.3456]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2TlBi2]
_chemical_formula_sum '[K8 Tl4 Bi8]'
_cell_volume [794.6520]
_cell_formula_units_Z [4]
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
[
  K  K0  4  0.0009  0.5000  0.3220  1
  K  K1  4  0.1773  0.5000  0.0913  1
  Tl  Tl2  4  0.2195  0.0000  0.3701  1
  Bi  Bi3  4  0.0187  0.0000  0.8866  1
  Bi  Bi4  4  0.1348  0.0000  0.5842  1
]