data_[Rb2V8O20]
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 [C2/m]
_cell_length_a [11.7344]
_cell_length_b [3.7215]
_cell_length_c [10.1272]
_cell_angle_alpha [90.0000]
_cell_angle_beta [100.7183]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [RbV4O10]
_chemical_formula_sum '[Rb2 V8 O20]'
_cell_volume [434.5301]
_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  2  0.0000  0.5000  0.5000  1.0
  V  V1  4  0.0889  0.0000  0.1534  1.0
  V  V2  4  0.2062  0.0000  0.8419  1.0
  O  O3  4  0.0653  0.0000  0.9069  1.0
  O  O4  4  0.0985  0.0000  0.3164  1.0
  O  O5  4  0.1209  0.5000  0.1277  1.0
  O  O6  4  0.1592  0.0000  0.6798  1.0
  O  O7  4  0.2418  0.5000  0.8839  1.0
]