data_[Ca6La3Nb3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  La  1.1000  1.9500  1.1720
  Nb  1.6000  1.4500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.8282]
_cell_length_b [5.8282]
_cell_length_c [15.1753]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [Ca2LaNbO6]
_chemical_formula_sum '[Ca6 La3 Nb3 O18]'
_cell_volume [446.4190]
_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
[
  Ca  Ca0  3  0.0000  0.0000  0.0263  1.0
  Ca  Ca1  3  0.0000  0.0000  0.5292  1.0
  La  La2  3  0.0000  0.0000  0.8024  1.0
  Nb  Nb3  3  0.0000  0.0000  0.3154  1.0
  O  O4  9  0.0077  0.7321  0.4090  1.0
  O  O5  9  0.0585  0.3475  0.9204  1.0
]