data_[Na3La6U3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  La  1.1000  1.9500  1.1720
  U  1.3800  1.7500  0.9913
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [6.0913]
_cell_length_b [6.0913]
_cell_length_c [15.4242]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [NaLa2UO6]
_chemical_formula_sum '[Na3 La6 U3 O18]'
_cell_volume [495.6247]
_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
[
  Na  Na0  3  0.0000  0.0000  0.1955  1
  La  La1  3  0.0000  0.0000  0.4660  1
  La  La2  3  0.0000  0.0000  0.9723  1
  U  U3  3  0.0000  0.0000  0.6838  1
  O  O4  9  0.0402  0.3358  0.7476  1
  O  O5  9  0.0658  0.6697  0.2594  1
]