data_[Pm8Tm4Hg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Tm  1.2500  1.7500  1.0950
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [16.5006]
_cell_length_b [3.5611]
_cell_length_c [8.5565]
_cell_angle_alpha [90.0000]
_cell_angle_beta [117.6589]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm4Tm2Hg]
_chemical_formula_sum '[Pm8 Tm4 Hg2]'
_cell_volume [445.3325]
_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  4  0.0841  0.0000  0.7045  1
  Pm  Pm1  4  0.1306  0.5000  0.3887  1
  Tm  Tm2  4  0.2154  0.0000  0.1378  1
  Hg  Hg3  2  0.0000  0.0000  0.0000  1
]