data_[Rb2Ta2V4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ta  1.5000  1.4500  0.8200
  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 [9.6434]
_cell_length_b [5.7037]
_cell_length_c [8.0996]
_cell_angle_alpha [90.0000]
_cell_angle_beta [91.3619]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [RbTaV2O8]
_chemical_formula_sum '[Rb2 Ta2 V4 O16]'
_cell_volume [445.3776]
_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  0.0000  0.5000  1.0
  Ta  Ta1  2  0.0000  0.0000  0.0000  1.0
  V  V2  4  0.1509  0.5000  0.7886  1.0
  O  O3  8  0.0551  0.2440  0.8383  1.0
  O  O4  4  0.1778  0.5000  0.5885  1.0
  O  O5  4  0.1879  0.0000  0.1022  1.0
]