data_[Pr4Al6Si4]
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
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.6043]
_cell_length_b [4.1780]
_cell_length_c [6.7869]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.9837]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pr2Al3Si2]
_chemical_formula_sum '[Pr4 Al6 Si4]'
_cell_volume [294.1388]
_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
[
  Pr  Pr0  4  0.1215  0.5000  0.3233  1.0
  Al  Al1  4  0.1929  0.5000  0.8666  1.0
  Al  Al2  2  0.0000  0.0000  0.0000  1.0
  Si  Si3  4  0.0891  0.0000  0.6446  1.0
]