data_[Rb6Na26]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [10.0679]
_cell_length_b [11.9677]
_cell_length_c [12.2051]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [Rb3Na13]
_chemical_formula_sum '[Rb6 Na26]'
_cell_volume [1470.5751]
_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  0.2650  0.0000  0.0100  1
  Rb  Rb1  2  0.0000  0.0000  0.7317  1
  Na  Na2  8  0.2769  0.2391  0.2562  1
  Na  Na3  4  0.0000  0.2293  0.4870  1
  Na  Na4  4  0.2548  0.0000  0.4830  1
  Na  Na5  4  0.5000  0.2163  0.5054  1
  Na  Na6  2  0.0000  0.0000  0.2724  1
  Na  Na7  2  0.5000  0.0000  0.2809  1
  Na  Na8  2  0.5000  0.0000  0.7193  1
]