data_[Pm2Ni4Sn4]
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 [P2_1/m]
_cell_length_a [4.4507]
_cell_length_b [4.3971]
_cell_length_c [10.1437]
_cell_angle_alpha [90.0000]
_cell_angle_beta [91.7543]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Pm(NiSn)2]
_chemical_formula_sum '[Pm2 Ni4 Sn4]'
_cell_volume [198.4204]
_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  0.2669  0.2500  0.7610  1
  Ni  Ni1  2  0.2420  0.2500  0.3703  1
  Ni  Ni2  2  0.3013  0.7500  0.9998  1
  Sn  Sn3  2  0.2138  0.2500  0.1233  1
  Sn  Sn4  2  0.2497  0.7500  0.5009  1
]