data_[K8Ag20Sn12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Ag  1.9300  1.6000  1.0867
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [11.2916]
_cell_length_b [14.3590]
_cell_length_c [6.5448]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [K2Ag5Sn3]
_chemical_formula_sum '[K8 Ag20 Sn12]'
_cell_volume [1061.1547]
_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  0.2339  0.3656  0.5000  1.0
  Ag  Ag1  8  0.0000  0.2052  0.2500  1.0
  Ag  Ag2  8  0.1700  0.1005  0.5000  1.0
  Ag  Ag3  4  0.0000  0.5000  0.2500  1.0
  Sn  Sn4  8  0.0886  0.3527  0.0000  1.0
  Sn  Sn5  4  0.0000  0.0000  0.2500  1.0
]