data_[K2Rb2Cr2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Rb  0.8200  2.3500  1.6600
  Cr  1.6600  1.4000  0.9400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [5.5160]
_cell_length_b [6.0378]
_cell_length_c [8.1603]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.8175]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [KRbCrO4]
_chemical_formula_sum '[K2 Rb2 Cr2 O8]'
_cell_volume [262.7384]
_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
[
  K  K0  2  0.2898  0.7500  0.4819  1
  Rb  Rb1  2  0.3218  0.2500  0.8869  1
  Cr  Cr2  2  0.1091  0.2500  0.2702  1
  O  O3  4  0.2254  0.0245  0.2014  1
  O  O4  2  0.1936  0.2500  0.4838  1
  O  O5  2  0.2032  0.7500  0.7963  1
]