data_[K2Na16Sn4]
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 [10.1875]
_cell_length_b [14.1635]
_cell_length_c [6.1818]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.5646]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K(Na4Sn)2]
_chemical_formula_sum '[K2 Na16 Sn4]'
_cell_volume [863.3167]
_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  2  0.0000  0.0000  0.5000  1.0
  Na  Na1  8  0.2085  0.1401  0.0809  1.0
  Na  Na2  4  0.0000  0.2696  0.5000  1.0
  Na  Na3  4  0.0866  0.5000  0.2712  1.0
  Sn  Sn4  4  0.0000  0.3096  0.0000  1.0
]