data_[Na2V2H4O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  V  1.6300  1.3500  0.7775
  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 [5.7616]
_cell_length_b [3.6492]
_cell_length_c [6.9337]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.9412]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [4]
_chemical_formula_structural [NaV(HO)2]
_chemical_formula_sum '[Na2 V2 H4 O4]'
_cell_volume [139.4561]
_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  0.3667  0.2283  0.2736  1
  V  V1  2  0.1303  0.2731  0.7014  1
  H  H2  2  0.1537  0.7171  0.2841  1
  H  H3  2  0.3713  0.2141  0.6007  1
  O  O4  2  0.0907  0.7429  0.6393  1
  O  O5  2  0.2789  0.2654  0.9399  1
]