data_[Pm8Ni2Ru4]
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
  Ru  2.2000  1.3000  0.6610
]
_symmetry_space_group_name_H-M [P1]
_cell_length_a [7.3490]
_cell_length_b [7.3499]
_cell_length_c [7.4784]
_cell_angle_alpha [107.8701]
_cell_angle_beta [108.4234]
_cell_angle_gamma [106.7801]
_symmetry_Int_Tables_number [1]
_chemical_formula_structural [Pm4NiRu2]
_chemical_formula_sum '[Pm8 Ni2 Ru4]'
_cell_volume [329.8024]
_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  1  0.0999  0.3375  0.4549  1
  Pm  Pm1  1  0.1491  0.8915  0.6278  1
  Pm  Pm2  1  0.2844  0.3793  0.0262  1
  Pm  Pm3  1  0.4323  0.0508  0.3031  1
  Pm  Pm4  1  0.5677  0.7245  0.5676  1
  Pm  Pm5  1  0.7048  0.2014  0.9751  1
  Pm  Pm6  1  0.7666  0.7844  0.1687  1
  Pm  Pm7  1  0.9235  0.5516  0.8034  1
  Ni  Ni8  1  0.4859  0.3964  0.7464  1
  Ni  Ni9  1  0.9921  0.9989  0.9717  1
  Ru  Ru10  1  0.1159  0.6271  0.2402  1
  Ru  Ru11  1  0.3813  0.7359  0.8846  1
  Ru  Ru12  1  0.7337  0.4636  0.3586  1
  Ru  Ru13  1  0.8626  0.1072  0.6218  1
]