data_[Na6Cr2O6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Cr  1.6600  1.4000  0.9400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [5.6366]
_cell_length_b [5.9202]
_cell_length_c [6.4558]
_cell_angle_alpha [116.7500]
_cell_angle_beta [90.8904]
_cell_angle_gamma [92.0506]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Na3CrO3]
_chemical_formula_sum '[Na6 Cr2 O6]'
_cell_volume [192.1285]
_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  0.0664  0.2318  0.4457  1
  Na  Na1  2  0.1354  0.2206  0.9818  1
  Na  Na2  2  0.4370  0.7470  0.7522  1
  Cr  Cr3  2  0.3673  0.7985  0.3119  1
  O  O4  2  0.2454  0.5211  0.3442  1
  O  O5  2  0.2558  0.8988  0.0951  1
  O  O6  2  0.3023  0.0452  0.6328  1
]