data_[Pr20Ag8Hg8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Ag  1.9300  1.6000  1.0867
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Cmce]
_cell_length_a [17.1641]
_cell_length_b [7.8147]
_cell_length_c [8.1170]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [64]
_chemical_formula_structural [Pr5(AgHg)2]
_chemical_formula_sum '[Pr20 Ag8 Hg8]'
_cell_volume [1088.7523]
_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  16  0.1436  0.1755  0.3275  1
  Pr  Pr1  4  0.0000  0.0000  0.0000  1
  Ag  Ag2  8  0.2104  0.0000  0.0000  1
  Hg  Hg3  8  0.0000  0.1251  0.6327  1
]