data_[K2Na6Cl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Na  0.9300  1.8000  1.1600
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [8.3346]
_cell_length_b [11.7562]
_cell_length_c [4.1373]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [KNa3Cl4]
_chemical_formula_sum '[K2 Na6 Cl8]'
_cell_volume [405.3829]
_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
[
  K  K0  2  0.0000  0.0000  0.0000  1
  Na  Na1  4  0.2500  0.2500  0.5000  1
  Na  Na2  2  0.0000  0.5000  0.0000  1
  Cl  Cl3  4  0.0000  0.2589  0.0000  1
  Cl  Cl4  4  0.2314  0.5000  0.5000  1
]