data_[K4Rb8Na2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [7.4335]
_cell_length_b [7.4335]
_cell_length_c [22.7889]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [K2Rb4Na]
_chemical_formula_sum '[K4 Rb8 Na2]'
_cell_volume [1259.2288]
_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
[
  Rb  Rb0  4  0.0000  0.0000  0.1777  1
  K  K1  4  0.0000  0.0000  0.3759  1
  Rb  Rb2  4  0.0000  0.5000  0.0000  1
  Na  Na3  2  0.0000  0.0000  0.0000  1
]