data_[Pm4Ni8Sn12]
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
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [12.2937]
_cell_length_b [7.7310]
_cell_length_c [5.3906]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [PmNi2Sn3]
_chemical_formula_sum '[Pm4 Ni8 Sn12]'
_cell_volume [512.3338]
_cell_formula_units_Z [4]
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  0.0000  0.3368  0.2500  1
  Ni  Ni1  8  0.1693  0.0000  0.0000  1
  Sn  Sn2  8  0.1904  0.3260  0.7500  1
  Sn  Sn3  4  0.0000  0.0915  0.7500  1
]