data_[K4Fe2Se4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Fe  1.8300  1.4000  0.8525
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [9.0602]
_cell_length_b [5.9045]
_cell_length_c [7.0930]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.3771]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Fe(SeO3)2]
_chemical_formula_sum '[K4 Fe2 Se4 O12]'
_cell_volume [353.3389]
_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  0.1989  0.5000  0.1403  1.0
  Fe  Fe1  2  0.0000  0.5000  0.5000  1.0
  Se  Se2  4  0.0933  0.0000  0.2490  1.0
  O  O3  8  0.0215  0.2335  0.7396  1.0
  O  O4  4  0.2431  0.5000  0.5334  1.0
]