data_[K4I2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  I  2.6600  1.4000  1.2733
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.5370]
_cell_length_b [6.4637]
_cell_length_c [7.7899]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.4281]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [K2IO4]
_chemical_formula_sum '[K4 I2 O8]'
_cell_volume [302.0145]
_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  0.2071  0.2500  0.4416  1
  K  K1  2  0.3835  0.2500  0.9958  1
  I  I2  2  0.1958  0.7500  0.1707  1
  O  O3  4  0.3927  0.5338  0.2557  1
  O  O4  2  0.0486  0.7500  0.3391  1
  O  O5  2  0.1622  0.7500  0.9142  1
]