data_[K4Se2O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [4.8195]
_cell_length_b [6.1780]
_cell_length_c [7.7218]
_cell_angle_alpha [77.1388]
_cell_angle_beta [74.3816]
_cell_angle_gamma [72.6833]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [K2SeO]
_chemical_formula_sum '[K4 Se2 O2]'
_cell_volume [208.8363]
_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  0.2118  0.2353  0.9322  1
  K  K1  2  0.4343  0.3134  0.3353  1
  Se  Se2  2  0.1060  0.8921  0.3692  1
  O  O3  2  0.3522  0.5863  0.0189  1
]