data_[Na12Sr4Cd8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sr  0.9500  2.0000  1.3200
  Cd  1.6900  1.5500  1.0900
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [16.1935]
_cell_length_b [5.3318]
_cell_length_c [10.0353]
_cell_angle_alpha [90.0000]
_cell_angle_beta [117.5834]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na3SrCd2]
_chemical_formula_sum '[Na12 Sr4 Cd8]'
_cell_volume [767.9795]
_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  0.0573  0.0000  0.3825  1.0
  Na  Na1  4  0.0900  0.5000  0.7205  1.0
  Na  Na2  4  0.2079  0.5000  0.5334  1.0
  Sr  Sr3  4  0.1397  0.0000  0.0268  1.0
  Cd  Cd4  4  0.0656  0.5000  0.1679  1.0
  Cd  Cd5  4  0.2225  0.0000  0.7502  1.0
]