data_[Nd18Sb3O36]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Nd  1.1400  1.8500  1.2765
  Sb  2.0500  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [10.2370]
_cell_length_b [10.2370]
_cell_length_c [9.7496]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Nd6SbO12]
_chemical_formula_sum '[Nd18 Sb3 O36]'
_cell_volume [884.8345]
_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  18  0.0509  0.2600  0.6507  1.0
  Sb  Sb1  3  0.0000  0.0000  0.0000  1.0
  O  O2  18  0.0387  0.2257  0.4031  1.0
  O  O3  18  0.0423  0.1885  0.8919  1.0
]