data_[Na4Nb4Cd4]
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
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [4.7572]
_cell_length_b [3.5418]
_cell_length_c [15.7148]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.4900]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [NaNbCd]
_chemical_formula_sum '[Na4 Nb4 Cd4]'
_cell_volume [264.7704]
_cell_formula_units_Z [4]
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  0.2390  0.0000  0.6002  1
  Nb  Nb1  4  0.2443  0.0000  0.9312  1
  Cd  Cd2  4  0.2461  0.5000  0.7757  1
]