data_[K2Na12Cd8]
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 [I-42m]
_cell_length_a [8.1614]
_cell_length_b [8.1614]
_cell_length_c [11.6542]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [121]
_chemical_formula_structural [K(Na3Cd2)2]
_chemical_formula_sum '[K2 Na12 Cd8]'
_cell_volume [776.2642]
_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  2  0.0000  0.0000  0.5000  1
  Na  Na1  8  0.1920  0.1920  0.2130  1
  Na  Na2  4  0.0000  0.5000  0.0000  1
  Cd  Cd3  8  0.1601  0.1601  0.9367  1
]