data_[K4Zn2I8]
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
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [P2_1]
_cell_length_a [7.8861]
_cell_length_b [8.1549]
_cell_length_c [9.7907]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.4010]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [4]
_chemical_formula_structural [K2ZnI4]
_chemical_formula_sum '[K4 Zn2 I8]'
_cell_volume [597.4426]
_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  0.2144  0.2417  0.0499  1
  K  K1  2  0.2669  0.2389  0.5710  1
  Zn  Zn2  2  0.2192  0.7585  0.7971  1
  I  I3  2  0.0079  0.4984  0.7393  1
  I  I4  2  0.0136  0.5040  0.2674  1
  I  I5  2  0.4003  0.7729  0.0733  1
  I  I6  2  0.4221  0.7704  0.6293  1
]