data_[Pm6Ni2Hg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Ni  1.9100  1.3500  0.7400
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [5.7109]
_cell_length_b [6.6359]
_cell_length_c [8.4298]
_cell_angle_alpha [99.2758]
_cell_angle_beta [103.1784]
_cell_angle_gamma [114.3983]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Pm3NiHg]
_chemical_formula_sum '[Pm6 Ni2 Hg2]'
_cell_volume [271.2697]
_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  2  0.1627  0.0282  0.2298  1
  Pm  Pm1  2  0.2060  0.6743  0.8856  1
  Pm  Pm2  2  0.4552  0.3185  0.6795  1
  Ni  Ni3  2  0.2936  0.3262  0.0100  1
  Hg  Hg4  2  0.1502  0.7580  0.5208  1
]