data_[Na10Sn8]
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 [C2/m]
_cell_length_a [10.6861]
_cell_length_b [4.6577]
_cell_length_c [10.2747]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.2556]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na5Sn4]
_chemical_formula_sum '[Na10 Sn8]'
_cell_volume [501.5592]
_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  4  0.1627  0.5000  0.5564  1.0
  Na  Na1  4  0.1647  0.5000  0.8797  1.0
  Na  Na2  2  0.0000  0.0000  0.0000  1.0
  Sn  Sn3  4  0.0140  0.0000  0.3246  1.0
  Sn  Sn4  4  0.1566  0.5000  0.2242  1.0
]