data_[Rb8Ge12O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ge  2.0100  1.2500  0.7700
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [13.8361]
_cell_length_b [7.3290]
_cell_length_c [6.7959]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.1609]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Rb2Ge3O4]
_chemical_formula_sum '[Rb8 Ge12 O16]'
_cell_volume [689.1326]
_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  0.1259  0.1207  0.0058  1
  Ge  Ge1  8  0.1737  0.3796  0.5069  1
  Ge  Ge2  4  0.0000  0.4311  0.2500  1
  O  O3  8  0.0677  0.2525  0.3888  1
  O  O4  8  0.2250  0.1971  0.6706  1
]