data_[K4Rb14Na4]
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 [Imm2]
_cell_length_a [5.2431]
_cell_length_b [23.9810]
_cell_length_c [13.8447]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [K2Rb7Na2]
_chemical_formula_sum '[K4 Rb14 Na4]'
_cell_volume [1740.7511]
_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  0.1508  0.7120  1
  Rb  Rb1  4  0.0000  0.1701  0.1180  1
  Rb  Rb2  4  0.0000  0.3513  0.9090  1
  K  K3  2  0.0000  0.0000  0.2885  1
  K  K4  2  0.0000  0.5000  0.1076  1
  Rb  Rb5  2  0.0000  0.5000  0.4613  1
  Na  Na6  4  0.0000  0.2811  0.4053  1
]