data_[K8Na2Cd4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Na  0.9300  1.8000  1.1600
  Cd  1.6900  1.5500  1.0900
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [6.8669]
_cell_length_b [6.8669]
_cell_length_c [17.4914]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [K4NaCd2]
_chemical_formula_sum '[K8 Na2 Cd4]'
_cell_volume [824.7918]
_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
[
  K  K0  4  0.0000  0.0000  0.2142  1
  K  K1  4  0.0000  0.5000  0.0000  1
  Na  Na2  2  0.0000  0.0000  0.0000  1
  Cd  Cd3  4  0.0000  0.0000  0.4150  1
]