data_[K2Rb12Na6]
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 [P2_1/m]
_cell_length_a [17.6784]
_cell_length_b [4.6990]
_cell_length_c [17.8785]
_cell_angle_alpha [90.0000]
_cell_angle_beta [102.9417]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [K(Rb2Na)3]
_chemical_formula_sum '[K2 Rb12 Na6]'
_cell_volume [1447.4410]
_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  0.0486  0.2500  0.7469  1
  Rb  Rb1  2  0.1181  0.2500  0.4858  1
  Rb  Rb2  2  0.2055  0.7500  0.9661  1
  Rb  Rb3  2  0.2098  0.7500  0.2566  1
  Rb  Rb4  2  0.2931  0.7500  0.7270  1
  Rb  Rb5  2  0.4091  0.2500  0.1485  1
  Rb  Rb6  2  0.4987  0.2500  0.6197  1
  Na  Na7  2  0.0450  0.2500  0.0808  1
  Na  Na8  2  0.3160  0.7500  0.4899  1
  Na  Na9  2  0.4211  0.2500  0.9264  1
]