data_[Pm12Si4Ni4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Si  1.9000  1.1000  0.5400
  Ni  1.9100  1.3500  0.7400
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [11.0317]
_cell_length_b [6.0131]
_cell_length_c [8.2210]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.4081]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Pm3SiNi]
_chemical_formula_sum '[Pm12 Si4 Ni4]'
_cell_volume [517.4309]
_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  0.1023  0.6025  0.8615  1
  Pm  Pm1  4  0.2242  0.1216  0.0596  1
  Pm  Pm2  4  0.4085  0.6168  0.2814  1
  Si  Si3  4  0.4015  0.1030  0.4267  1
  Ni  Ni4  4  0.1509  0.5042  0.2082  1
]