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 [4.6373]
_cell_length_b [9.2718]
_cell_length_c [7.8232]
_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 [336.3700]
_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  0.1533  0.3417  1.0
  Na  Na1  2  0.5000  0.0823  0.0247  1.0
  Pr  Pr2  2  0.0000  0.4494  0.9983  1.0
  Al  Al3  2  0.5000  0.3318  0.6593  1.0
  Sn  Sn4  2  0.0000  0.1775  0.7385  1.0
  Sn  Sn5  2  0.5000  0.3747  0.2831  1.0
]