data_[Pm2Ni8Pt16]
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
  Pt  2.2800  1.3500  0.8050
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [8.8636]
_cell_length_b [8.8636]
_cell_length_c [5.0939]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Pm(NiPt2)4]
_chemical_formula_sum '[Pm2 Ni8 Pt16]'
_cell_volume [400.1905]
_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  0.0000  0.0000  0.0000  1
  Ni  Ni1  8  0.2500  0.2500  0.2500  1
  Pt  Pt2  8  0.0000  0.2210  0.5000  1
  Pt  Pt3  8  0.0000  0.3431  0.0000  1
]