data_[Rb4Nd8Se6O4]
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
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [4.8019]
_cell_length_b [4.8019]
_cell_length_c [25.7499]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Rb2Nd4Se3O2]
_chemical_formula_sum '[Rb4 Nd8 Se6 O4]'
_cell_volume [593.7558]
_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  4  0.0000  0.0000  0.2998  1
  Nd  Nd1  8  0.0000  0.5000  0.0741  1
  Se  Se2  4  0.0000  0.0000  0.1547  1
  Se  Se3  2  0.0000  0.0000  0.0000  1
  O  O4  4  0.0000  0.0000  0.4085  1
]