data_[K21Rb18]
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
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [8.9375]
_cell_length_b [8.9375]
_cell_length_c [46.8595]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [K7Rb6]
_chemical_formula_sum '[K21 Rb18]'
_cell_volume [3241.5802]
_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  18  0.0041  0.5020  0.4103  1.0
  Rb  Rb1  6  0.0000  0.0000  0.1664  1.0
  Rb  Rb2  6  0.0000  0.0000  0.3490  1.0
  Rb  Rb3  6  0.0000  0.0000  0.4528  1.0
  K  K4  3  0.0000  0.0000  0.0000  1.0
]