data_[Rb2Nd2Cr2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Nd  1.1400  1.8500  1.2765
  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 [6.0055]
_cell_length_b [5.9761]
_cell_length_c [7.7519]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.6046]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbNdCrO4]
_chemical_formula_sum '[Rb2 Nd2 Cr2 O8]'
_cell_volume [265.1799]
_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  0.3063  0.2500  0.0716  1
  Nd  Nd1  2  0.2040  0.2500  0.5443  1
  Cr  Cr2  2  0.2544  0.7500  0.3337  1
  O  O3  4  0.0442  0.5230  0.3210  1
  O  O4  2  0.4444  0.7500  0.1972  1
  O  O5  2  0.4477  0.7500  0.5574  1
]