data_[K8Na8Sn4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Na  0.9300  1.8000  1.1600
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.0694]
_cell_length_b [6.1099]
_cell_length_c [12.1196]
_cell_angle_alpha [90.0000]
_cell_angle_beta [120.0161]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Na2Sn]
_chemical_formula_sum '[K8 Na8 Sn4]'
_cell_volume [837.9857]
_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  0.1460  0.0000  0.9779  1.0
  K  K1  4  0.1834  0.0000  0.3369  1.0
  Na  Na2  4  0.0014  0.5000  0.6640  1.0
  Na  Na3  4  0.1358  0.0000  0.6443  1.0
  Sn  Sn4  4  0.0927  0.5000  0.1329  1.0
]