data_[Rb4V6O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  V  1.6300  1.3500  0.7775
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P4bm]
_cell_length_a [8.9482]
_cell_length_b [8.9482]
_cell_length_c [5.4132]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [100]
_chemical_formula_structural [Rb2V3O8]
_chemical_formula_sum '[Rb4 V6 O16]'
_cell_volume [433.4379]
_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  4  0.1699  0.3301  0.6457  1
  V  V1  4  0.1336  0.6336  0.1233  1
  V  V2  2  0.0000  0.0000  0.1198  1
  O  O3  8  0.0861  0.8083  0.0106  1
  O  O4  4  0.1290  0.6290  0.4293  1
  O  O5  2  0.0000  0.0000  0.4235  1
  O  O6  2  0.0000  0.5000  0.0011  1
]