data_[Ce20Ge8Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ce  1.1200  1.8500  1.0800
  Ge  2.0100  1.2500  0.7700
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Cmce]
_cell_length_a [14.8704]
_cell_length_b [7.8256]
_cell_length_c [7.8610]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [64]
_chemical_formula_structural [Ce5(GeSe)2]
_chemical_formula_sum '[Ce20 Ge8 Se8]'
_cell_volume [914.7815]
_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
[
  Ce  Ce0  16  0.1381  0.1723  0.3304  1
  Ce  Ce1  4  0.0000  0.0000  0.0000  1
  Ge  Ge2  8  0.0000  0.1258  0.6261  1
  Se  Se3  8  0.2004  0.0000  0.0000  1
]