data_[K16Na4O4]
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
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [5.6071]
_cell_length_b [21.7659]
_cell_length_c [8.4496]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [K4NaO]
_chemical_formula_sum '[K16 Na4 O4]'
_cell_volume [1031.2080]
_cell_formula_units_Z [4]
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  8  0.0000  0.3281  0.5446  1.0
  K  K1  4  0.0000  0.0755  0.2500  1.0
  K  K2  4  0.0000  0.5000  0.0000  1.0
  Na  Na3  4  0.0000  0.1244  0.7500  1.0
  O  O4  4  0.0000  0.4143  0.7500  1.0
]