data_[K4Na16Sn2]
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 [18.1346]
_cell_length_b [5.7637]
_cell_length_c [8.9833]
_cell_angle_alpha [90.0000]
_cell_angle_beta [114.0136]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Na8Sn]
_chemical_formula_sum '[K4 Na16 Sn2]'
_cell_volume [857.6817]
_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  0.2334  0.0000  0.6650  1
  Na  Na1  4  0.0304  0.0000  0.7155  1
  Na  Na2  4  0.0711  0.5000  0.4028  1
  Na  Na3  4  0.1082  0.0000  0.1194  1
  Na  Na4  4  0.1520  0.5000  0.8812  1
  Sn  Sn5  2  0.0000  0.5000  0.0000  1
]