data_[K4Na12Sb4]
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
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [9.1575]
_cell_length_b [8.8856]
_cell_length_c [10.8253]
_cell_angle_alpha [90.0000]
_cell_angle_beta [99.8950]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [KNa3Sb]
_chemical_formula_sum '[K4 Na12 Sb4]'
_cell_volume [867.7466]
_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  4  0.2747  0.0611  0.7734  1.0
  Na  Na1  4  0.0650  0.1085  0.4008  1.0
  Na  Na2  4  0.1255  0.5637  0.6282  1.0
  Na  Na3  4  0.3773  0.6515  0.9547  1.0
  Sb  Sb4  4  0.0572  0.7448  0.3695  1.0
]