data_[Na4Sn4Br14]
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
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [4.3806]
_cell_length_b [15.8435]
_cell_length_c [9.9838]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [Na2Sn2Br7]
_chemical_formula_sum '[Na4 Sn4 Br14]'
_cell_volume [692.9174]
_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  0.0000  0.2585  0.4631  1
  Sn  Sn1  2  0.0000  0.0000  0.1130  1
  Sn  Sn2  2  0.0000  0.5000  0.1730  1
  Br  Br3  4  0.0000  0.1107  0.8964  1
  Br  Br4  4  0.0000  0.3140  0.1219  1
  Br  Br5  4  0.0000  0.3893  0.7038  1
  Br  Br6  2  0.0000  0.0000  0.4900  1
]