data_[K8Pm6Hg2O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Pm  1.1300  1.8500  1.1100
  Hg  2.0000  1.5000  1.2450
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.6112]
_cell_length_b [7.0689]
_cell_length_c [7.4832]
_cell_angle_alpha [90.0000]
_cell_angle_beta [122.2705]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K4Pm3HgO8]
_chemical_formula_sum '[K8 Pm6 Hg2 O16]'
_cell_volume [564.0670]
_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
[
  K  K0  4  0.2500  0.2500  0.0000  1
  K  K1  2  0.0000  0.0000  0.0000  1
  K  K2  2  0.0000  0.5000  0.0000  1
  Pm  Pm3  4  0.2500  0.2500  0.5000  1
  Pm  Pm4  2  0.0000  0.5000  0.5000  1
  Hg  Hg5  2  0.0000  0.0000  0.5000  1
  O  O6  8  0.0209  0.2442  0.3093  1
  O  O7  4  0.2239  0.5000  0.6880  1
  O  O8  4  0.2425  0.5000  0.2859  1
]