data_[Rb2Cr2Fe2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Cr  1.6600  1.4000  0.9400
  Fe  1.8300  1.4000  0.8525
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [5.5252]
_cell_length_b [5.3649]
_cell_length_c [7.1454]
_cell_angle_alpha [90.0000]
_cell_angle_beta [98.4798]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbCrFeO4]
_chemical_formula_sum '[Rb2 Cr2 Fe2 O8]'
_cell_volume [209.4881]
_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  0.3217  0.7500  0.9067  1
  Cr  Cr1  2  0.3541  0.2500  0.5385  1
  Fe  Fe2  2  0.1122  0.7500  0.3564  1
  O  O3  4  0.3857  0.5160  0.3467  1
  O  O4  2  0.0228  0.2500  0.4174  1
  O  O5  2  0.2127  0.2500  0.7704  1
]