data_[Cs4Cd2Si2Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Cd  1.6900  1.5500  1.0900
  Si  1.9000  1.1000  0.5400
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [I-42m]
_cell_length_a [8.7490]
_cell_length_b [8.7490]
_cell_length_c [7.0652]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [121]
_chemical_formula_structural [Cs2CdSiSe4]
_chemical_formula_sum '[Cs4 Cd2 Si2 Se8]'
_cell_volume [540.8071]
_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
[
  Cs  Cs0  4  0.0000  0.5000  0.0000  1.0
  Cd  Cd1  2  0.0000  0.0000  0.5000  1.0
  Si  Si2  2  0.0000  0.0000  0.0000  1.0
  Se  Se3  8  0.1462  0.1462  0.2079  1.0
]