data_[K8Eu8Se8O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Eu  1.2000  1.8500  1.1985
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmce]
_cell_length_a [6.0143]
_cell_length_b [18.3744]
_cell_length_c [6.3150]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [64]
_chemical_formula_structural [KEuSeO]
_chemical_formula_sum '[K8 Eu8 Se8 O8]'
_cell_volume [697.8644]
_cell_formula_units_Z [8]
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  8  0.0000  0.0855  0.2051  1
  Eu  Eu1  8  0.0000  0.2124  0.5543  1
  Se  Se2  8  0.2500  0.0775  0.7500  1
  O  O3  8  0.2500  0.2152  0.2500  1
]