data_[Nd3Nb3Cd6O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Nd  1.1400  1.8500  1.2765
  Nb  1.6000  1.4500  0.8200
  Cd  1.6900  1.5500  1.0900
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.7435]
_cell_length_b [5.7435]
_cell_length_c [15.0855]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [NdNbCd2O6]
_chemical_formula_sum '[Nd3 Nb3 Cd6 O18]'
_cell_volume [430.9612]
_cell_formula_units_Z [3]
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
[
  Nd  Nd0  3  0.0000  0.0000  0.8081  1
  Nb  Nb1  3  0.0000  0.0000  0.3125  1
  Cd  Cd2  3  0.0000  0.0000  0.0374  1
  Cd  Cd3  3  0.0000  0.0000  0.5299  1
  O  O4  9  0.0113  0.7308  0.4071  1
  O  O5  9  0.0523  0.3491  0.9174  1
]