data_[Rb2Tl4V2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Tl  1.6200  1.9000  1.3325
  V  1.6300  1.3500  0.7775
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pmn2_1]
_cell_length_a [8.1235]
_cell_length_b [7.9387]
_cell_length_c [5.9014]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [31]
_chemical_formula_structural [RbTl2VO4]
_chemical_formula_sum '[Rb2 Tl4 V2 O8]'
_cell_volume [380.5833]
_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  0.8743  0.4967  1
  Tl  Tl1  4  0.2486  0.6815  0.9925  1
  V  V2  2  0.0000  0.1329  0.0022  1
  O  O3  4  0.1749  0.2084  0.8669  1
  O  O4  2  0.0000  0.1936  0.2921  1
  O  O5  2  0.0000  0.9109  0.9901  1
]