data_[Cs2Se2O4F2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [4.8823]
_cell_length_b [6.6721]
_cell_length_c [7.9663]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.1926]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [CsSeO2F]
_chemical_formula_sum '[Cs2 Se2 O4 F2]'
_cell_volume [247.9081]
_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
[
  Cs  Cs0  2  0.1617  0.2500  0.3166  1.0
  Se  Se1  2  0.4209  0.2500  0.8415  1.0
  O  O2  4  0.3531  0.0482  0.7125  1.0
  F  F3  2  0.1651  0.7500  0.0986  1.0
]