data_[Cd2Ge4Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cd  1.6900  1.5500  1.0900
  Ge  2.0100  1.2500  0.7700
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [I4/m]
_cell_length_a [7.6348]
_cell_length_b [7.6348]
_cell_length_c [6.5600]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [87]
_chemical_formula_structural [Cd(GeSe2)2]
_chemical_formula_sum '[Cd2 Ge4 Se8]'
_cell_volume [382.3838]
_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
[
  Cd  Cd0  2  0.0000  0.0000  0.5000  1
  Ge  Ge1  4  0.0000  0.5000  0.2500  1
  Se  Se2  8  0.1809  0.6855  0.5000  1
]