data_[Na4Nb2Cd4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Nb  1.6000  1.4500  0.8200
  Cd  1.6900  1.5500  1.0900
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [5.9442]
_cell_length_b [9.5896]
_cell_length_c [6.0147]
_cell_angle_alpha [90.0000]
_cell_angle_beta [112.2722]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na2NbCd2O6]
_chemical_formula_sum '[Na4 Nb2 Cd4 O12]'
_cell_volume [317.2718]
_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  0.0000  0.1747  0.0000  1
  Nb  Nb1  2  0.0000  0.0000  0.5000  1
  Cd  Cd2  4  0.0000  0.3378  0.5000  1
  O  O3  8  0.2079  0.1527  0.7146  1
  O  O4  4  0.2186  0.0000  0.3050  1
]