data_[Na4Sn4Sb2]
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
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [8.7132]
_cell_length_b [5.6969]
_cell_length_c [5.8806]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.0606]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na2Sn2Sb]
_chemical_formula_sum '[Na4 Sn4 Sb2]'
_cell_volume [284.3501]
_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  0.1155  0.5000  0.3368  1.0
  Sn  Sn1  4  0.1802  0.0000  0.0517  1.0
  Sb  Sb2  2  0.0000  0.0000  0.5000  1.0
]