data_[Na4P2H2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  P  2.1900  1.0000  0.5500
  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 [5.5485]
_cell_length_b [6.9015]
_cell_length_c [5.5606]
_cell_angle_alpha [90.0000]
_cell_angle_beta [116.5673]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [4]
_chemical_formula_structural [Na2PHO4]
_chemical_formula_sum '[Na4 P2 H2 O8]'
_cell_volume [190.4487]
_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  0.0026  0.0011  0.9914  1.0
  Na  Na1  2  0.3927  0.7509  0.7786  1.0
  P  P2  2  0.3348  0.2393  0.6173  1.0
  H  H3  2  0.0338  0.4816  0.5313  1.0
  O  O4  2  0.2076  0.0622  0.6933  1.0
  O  O5  2  0.2102  0.4310  0.6941  1.0
  O  O6  2  0.2432  0.2468  0.3130  1.0
  O  O7  2  0.3616  0.7484  0.2035  1.0
]