data_[Al2Cd2Cu4Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Al  1.6100  1.2500  0.6750
  Cd  1.6900  1.5500  1.0900
  Cu  1.9000  1.3500  0.8200
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [I-42m]
_cell_length_a [5.7533]
_cell_length_b [5.7533]
_cell_length_c [11.3814]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [121]
_chemical_formula_structural [AlCd(CuSe2)2]
_chemical_formula_sum '[Al2 Cd2 Cu4 Se8]'
_cell_volume [376.7317]
_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
[
  Al  Al0  2  0.0000  0.0000  0.5000  1.0
  Cd  Cd1  2  0.0000  0.0000  0.0000  1.0
  Cu  Cu2  4  0.0000  0.5000  0.2500  1.0
  Se  Se3  8  0.2323  0.7677  0.3663  1.0
]