data_[Rb4Nb8H4O24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Nb  1.6000  1.4500  0.8200
  H  2.2000  0.2500  0.0000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [8.3711]
_cell_length_b [14.7767]
_cell_length_c [7.5991]
_cell_angle_alpha [90.0000]
_cell_angle_beta [98.0359]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [RbNb2HO6]
_chemical_formula_sum '[Rb4 Nb8 H4 O24]'
_cell_volume [930.7607]
_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  0.2171  0.2500  1.0
  Nb  Nb1  8  0.1679  0.4721  0.1465  1.0
  H  H2  4  0.0000  0.0297  0.2500  1.0
  O  O3  8  0.0965  0.5120  0.8911  1.0
  O  O4  8  0.1410  0.0368  0.3066  1.0
  O  O5  8  0.2104  0.6455  0.6406  1.0
]