data_[Rb2Tl4Cr2O8]
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
  Cr  1.6600  1.4000  0.9400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pmn2_1]
_cell_length_a [7.8691]
_cell_length_b [7.7230]
_cell_length_c [5.8498]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [31]
_chemical_formula_structural [RbTl2CrO4]
_chemical_formula_sum '[Rb2 Tl4 Cr2 O8]'
_cell_volume [355.5087]
_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  0.9035  0.4763  1
  Tl  Tl1  4  0.2272  0.6545  0.9804  1
  Cr  Cr2  2  0.0000  0.2022  0.0069  1
  O  O3  4  0.1858  0.2898  0.8948  1
  O  O4  2  0.0000  0.2538  0.3014  1
  O  O5  2  0.0000  0.9829  0.9648  1
]