data_[Cs2Na2Se2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Na  0.9300  1.8000  1.1600
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [5.9933]
_cell_length_b [6.2830]
_cell_length_c [7.8225]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.2493]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [CsNaSeO4]
_chemical_formula_sum '[Cs2 Na2 Se2 O8]'
_cell_volume [281.3161]
_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  0.2984  0.2500  0.0656  1
  Na  Na1  2  0.2001  0.2500  0.5278  1
  Se  Se2  2  0.2475  0.7500  0.3426  1
  O  O3  4  0.0691  0.5368  0.3106  1
  O  O4  2  0.4027  0.7500  0.1952  1
  O  O5  2  0.4323  0.7500  0.5495  1
]