data_[K8Tl4Ag8]
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
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [11.3414]
_cell_length_b [6.7514]
_cell_length_c [8.8101]
_cell_angle_alpha [90.0000]
_cell_angle_beta [102.8975]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [K2TlAg2]
_chemical_formula_sum '[K8 Tl4 Ag8]'
_cell_volume [657.5767]
_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  8  0.1455  0.3653  0.6420  1.0
  Tl  Tl1  4  0.0000  0.1196  0.2500  1.0
  Ag  Ag2  8  0.1421  0.1391  0.9992  1.0
]