data_[Rb6Nd4Y2Se12]
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
  Y  1.2200  1.8000  1.0400
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [7.5066]
_cell_length_b [13.0025]
_cell_length_c [8.3989]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.3459]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb3Nd2YSe6]
_chemical_formula_sum '[Rb6 Nd4 Y2 Se12]'
_cell_volume [782.4908]
_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  0.1681  0.5000  1
  Rb  Rb1  2  0.0000  0.5000  0.5000  1
  Nd  Nd2  4  0.0000  0.3335  0.0000  1
  Y  Y3  2  0.0000  0.0000  0.0000  1
  Se  Se4  8  0.2294  0.1630  0.1992  1
  Se  Se5  4  0.2407  0.5000  0.1996  1
]