data_[Na4Pr2Al2Sn4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Pr  1.1300  1.8500  1.0600
  Al  1.6100  1.2500  0.6750
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [4.6294]
_cell_length_b [9.2566]
_cell_length_c [7.8238]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [Na2PrAlSn2]
_chemical_formula_sum '[Na4 Pr2 Al2 Sn4]'
_cell_volume [335.2704]
_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
[
  Na  Na0  2  0.0000  0.1534  0.8417  1
  Na  Na1  2  0.5000  0.0822  0.5248  1
  Pr  Pr2  2  0.0000  0.4496  0.4978  1
  Al  Al3  2  0.5000  0.3321  0.1592  1
  Sn  Sn4  2  0.0000  0.1773  0.2384  1
  Sn  Sn5  2  0.5000  0.3748  0.7837  1
]