data_[Na6Zn3Sn3F18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Zn  1.6500  1.3500  0.8800
  Sn  1.9600  1.4500  0.8300
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.7979]
_cell_length_b [5.7979]
_cell_length_c [15.2395]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [Na2ZnSnF6]
_chemical_formula_sum '[Na6 Zn3 Sn3 F18]'
_cell_volume [443.6584]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.0228  1.0
  Na  Na1  3  0.0000  0.0000  0.5296  1.0
  Zn  Zn2  3  0.0000  0.0000  0.3176  1.0
  Sn  Sn3  3  0.0000  0.0000  0.8098  1.0
  F  F4  9  0.0038  0.7238  0.4087  1.0
  F  F5  9  0.0434  0.3395  0.9186  1.0
]