data_[Na6C2O10]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  C  2.5500  0.7000  0.3000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [6.8946]
_cell_length_b [8.5986]
_cell_length_c [6.1262]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.4851]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [Na3CO5]
_chemical_formula_sum '[Na6 C2 O10]'
_cell_volume [340.2188]
_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  4  0.0479  0.2456  0.0336  1
  Na  Na1  2  0.4320  0.5000  0.5972  1
  C  C2  2  0.3477  0.5000  0.1335  1
  O  O3  4  0.2681  0.0800  0.8639  1
  O  O4  4  0.3512  0.3687  0.2414  1
  O  O5  2  0.3457  0.5000  0.9206  1
]