data_[Pm22Ag8Hg18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Ag  1.9300  1.6000  1.0867
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [14.9457]
_cell_length_b [22.4313]
_cell_length_c [3.8122]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Pm11Ag4Hg9]
_chemical_formula_sum '[Pm22 Ag8 Hg18]'
_cell_volume [1278.0570]
_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
[
  Pm  Pm0  8  0.2375  0.1734  0.0000  1
  Pm  Pm1  4  0.0000  0.1694  0.0000  1
  Pm  Pm2  4  0.0000  0.3629  0.0000  1
  Pm  Pm3  4  0.2229  0.5000  0.0000  1
  Pm  Pm4  2  0.0000  0.0000  0.0000  1
  Ag  Ag5  8  0.1495  0.4038  0.5000  1
  Hg  Hg6  8  0.1082  0.2643  0.5000  1
  Hg  Hg7  8  0.1353  0.0763  0.5000  1
  Hg  Hg8  2  0.0000  0.5000  0.5000  1
]