data_[Pr3Al6Si3Ni12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Al  1.6100  1.2500  0.6750
  Si  1.9000  1.1000  0.5400
  Ni  1.9100  1.3500  0.7400
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [4.0312]
_cell_length_b [4.0312]
_cell_length_c [25.5715]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [PrAl2SiNi4]
_chemical_formula_sum '[Pr3 Al6 Si3 Ni12]'
_cell_volume [359.8762]
_cell_formula_units_Z [3]
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
[
  Pr  Pr0  3  0.0000  0.0000  0.0000  1
  Al  Al1  6  0.0000  0.0000  0.2377  1
  Si  Si2  3  -0.0000  -0.0000  0.5000  1
  Ni  Ni3  6  0.0000  0.0000  0.1379  1
  Ni  Ni4  6  0.0000  0.0000  0.4112  1
]