data_[K6Zn4Sn8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Zn  1.6500  1.3500  0.8800
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.8145]
_cell_length_b [4.4764]
_cell_length_c [10.3756]
_cell_angle_alpha [90.0000]
_cell_angle_beta [102.4762]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K3(ZnSn2)2]
_chemical_formula_sum '[K6 Zn4 Sn8]'
_cell_volume [626.4766]
_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
[
  K  K0  4  0.1178  0.5000  0.3922  1.0
  K  K1  2  0.0000  0.0000  0.0000  1.0
  Zn  Zn2  4  0.1507  0.5000  0.8196  1.0
  Sn  Sn3  4  0.1084  0.0000  0.6724  1.0
  Sn  Sn4  4  0.2140  0.5000  0.0962  1.0
]