data_[Rb8Ag20Sb16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ag  1.9300  1.6000  1.0867
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Fmmm]
_cell_length_a [6.5134]
_cell_length_b [13.2770]
_cell_length_c [15.6975]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [69]
_chemical_formula_structural [Rb2Ag5Sb4]
_chemical_formula_sum '[Rb8 Ag20 Sb16]'
_cell_volume [1357.4923]
_cell_formula_units_Z [4]
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  8  0.0000  0.1520  0.0000  1.0
  Ag  Ag1  8  0.2500  0.0000  0.2500  1.0
  Ag  Ag2  8  0.2500  0.2500  0.2500  1.0
  Ag  Ag3  4  0.0000  0.0000  0.5000  1.0
  Sb  Sb4  16  0.0000  0.1250  0.3543  1.0
]