data_[Na16Sn24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Fdd2]
_cell_length_a [10.8282]
_cell_length_b [16.5301]
_cell_length_c [6.4178]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [43]
_chemical_formula_structural [Na2Sn3]
_chemical_formula_sum '[Na16 Sn24]'
_cell_volume [1148.7200]
_cell_formula_units_Z [8]
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  16  0.0606  0.3030  0.2573  1.0
  Sn  Sn1  16  0.0546  0.3878  0.7510  1.0
  Sn  Sn2  8  0.0000  0.0000  0.6133  1.0
]