data_[Rb4Si8Ge24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Si  1.9000  1.1000  0.5400
  Ge  2.0100  1.2500  0.7700
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [8.1198]
_cell_length_b [17.1664]
_cell_length_c [7.2832]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.1745]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Rb(SiGe3)2]
_chemical_formula_sum '[Rb4 Si8 Ge24]'
_cell_volume [958.8699]
_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  4  0.0000  0.1042  0.2500  1
  Si  Si1  8  0.1026  0.4329  0.4226  1
  Ge  Ge2  8  0.1619  0.1940  0.8773  1
  Ge  Ge3  8  0.1652  0.2951  0.3536  1
  Ge  Ge4  8  0.2149  0.4473  0.1312  1
]