data_[K8Tl8Sn4]
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
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.8413]
_cell_length_b [5.3369]
_cell_length_c [12.9442]
_cell_angle_alpha [90.0000]
_cell_angle_beta [118.3349]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Tl2Sn]
_chemical_formula_sum '[K8 Tl8 Sn4]'
_cell_volume [780.8173]
_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  0.0030  0.0000  0.3360  1.0
  K  K1  4  0.2000  0.0000  0.1173  1.0
  Tl  Tl2  4  0.0116  0.5000  0.8862  1.0
  Tl  Tl3  4  0.1519  0.5000  0.5475  1.0
  Sn  Sn4  4  0.2130  0.5000  0.3378  1.0
]