data_[K4Rb2Na16]
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 [C2/m]
_cell_length_a [20.5092]
_cell_length_b [5.4696]
_cell_length_c [9.4372]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.5125]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2RbNa8]
_chemical_formula_sum '[K4 Rb2 Na16]'
_cell_volume [1024.8558]
_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  4  0.2233  0.0000  0.6453  1.0
  Rb  Rb1  2  0.0000  0.5000  0.0000  1.0
  Na  Na2  4  0.0362  0.0000  0.7083  1.0
  Na  Na3  4  0.0859  0.5000  0.4735  1.0
  Na  Na4  4  0.1400  0.0000  0.1581  1.0
  Na  Na5  4  0.1820  0.5000  0.9029  1.0
]