data_[Na2H2O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  H  2.2000  0.2500  0.0000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1]
_cell_length_a [3.4543]
_cell_length_b [3.4099]
_cell_length_c [5.9081]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.8004]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [4]
_chemical_formula_structural [NaHO]
_chemical_formula_sum '[Na2 H2 O2]'
_cell_volume [66.9620]
_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
[
  Na  Na0  2  0.1704  0.3204  0.3258  1.0
  H  H1  2  0.4467  0.3875  0.8956  1.0
  O  O2  2  0.3496  0.2921  0.7344  1.0
]