data_[Sr4Cd4Si8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Cd  1.6900  1.5500  1.0900
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [7.1012]
_cell_length_b [4.6342]
_cell_length_c [11.3336]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [SrCdSi2]
_chemical_formula_sum '[Sr4 Cd4 Si8]'
_cell_volume [372.9716]
_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
[
  Sr  Sr0  4  0.1410  0.2500  0.8557  1.0
  Cd  Cd1  4  0.1583  0.2500  0.5547  1.0
  Si  Si2  4  0.0273  0.2500  0.3334  1.0
  Si  Si3  4  0.1855  0.2500  0.1499  1.0
]