data_[K4Na2Sn2I12]
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
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [8.2650]
_cell_length_b [8.7387]
_cell_length_c [14.4034]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.4174]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [K2NaSnI6]
_chemical_formula_sum '[K4 Na2 Sn2 I12]'
_cell_volume [858.1877]
_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  0.2150  0.0902  0.2476  1.0
  Na  Na1  2  0.0000  0.0000  0.5000  1.0
  Sn  Sn2  2  0.5000  0.0000  0.0000  1.0
  I  I3  4  0.1420  0.1862  0.9436  1.0
  I  I4  4  0.2670  0.7017  0.9455  1.0
  I  I5  4  0.3726  0.0262  0.7563  1.0
]