data_[Pr8Al4Ag4Se20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Al  1.6100  1.2500  0.6750
  Ag  1.9300  1.6000  1.0867
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.0804]
_cell_length_b [18.4573]
_cell_length_c [11.9217]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Pr2AlAgSe5]
_chemical_formula_sum '[Pr8 Al4 Ag4 Se20]'
_cell_volume [897.8603]
_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
[
  Pr  Pr0  4  0.0000  0.1187  0.6820  1.0
  Pr  Pr1  4  0.0000  0.1262  0.2994  1.0
  Al  Al2  4  0.0000  0.4284  0.4540  1.0
  Ag  Ag3  4  0.0000  0.2239  0.0229  1.0
  Se  Se4  4  0.0000  0.0419  0.0613  1.0
  Se  Se5  4  0.0000  0.2903  0.6768  1.0
  Se  Se6  4  0.0000  0.3164  0.3529  1.0
  Se  Se7  4  0.0000  0.3668  0.9951  1.0
  Se  Se8  4  0.0000  0.4965  0.2796  1.0
]