data_[K3Na6Fe3H18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Na  0.9300  1.8000  1.1600
  Fe  1.8300  1.4000  0.8525
  H  2.2000  0.2500  0.0000
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [5.6718]
_cell_length_b [5.6718]
_cell_length_c [13.0194]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [KNa2FeH6]
_chemical_formula_sum '[K3 Na6 Fe3 H18]'
_cell_volume [362.7062]
_cell_formula_units_Z [3]
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  3  -0.0000  0.0000  0.5000  1.0
  Na  Na1  6  0.0000  0.0000  0.2326  1.0
  Fe  Fe2  3  0.0000  0.0000  0.0000  1.0
  H  H3  18  0.0015  0.2296  0.9283  1.0
]