data_[K14Rb2Na8]
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 [18.7419]
_cell_length_b [7.4820]
_cell_length_c [13.0523]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.2811]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K7RbNa4]
_chemical_formula_sum '[K14 Rb2 Na8]'
_cell_volume [1512.3357]
_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  0.0684  0.0000  0.4035  1.0
  K  K1  4  0.2129  0.5000  0.6635  1.0
  K  K2  4  0.2172  0.0000  0.8889  1.0
  Rb  Rb3  2  0.0000  0.0000  0.0000  1.0
  K  K4  2  0.0000  0.5000  0.0000  1.0
  Na  Na5  4  0.0369  0.5000  0.7308  1.0
  Na  Na6  4  0.1816  0.5000  0.3413  1.0
]