data_[Rb6Al8Ge8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Al  1.6100  1.2500  0.6750
  Ge  2.0100  1.2500  0.7700
]
_symmetry_space_group_name_H-M [I-43m]
_cell_length_a [8.3592]
_cell_length_b [8.3592]
_cell_length_c [8.3592]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [217]
_chemical_formula_structural [Rb3(AlGe)4]
_chemical_formula_sum '[Rb6 Al8 Ge8]'
_cell_volume [584.1013]
_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  6  0.0000  0.0000  0.5000  1.0
  Al  Al1  8  0.1449  0.8551  0.8551  1.0
  Ge  Ge2  8  0.1682  0.1682  0.8318  1.0
]