data_[Ca6Y3U3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Y  1.2200  1.8000  1.0400
  U  1.3800  1.7500  0.9913
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.8645]
_cell_length_b [5.8645]
_cell_length_c [15.1188]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [Ca2YUO6]
_chemical_formula_sum '[Ca6 Y3 U3 O18]'
_cell_volume [450.3057]
_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  0.4659  1
  Ca  Ca1  3  0.0000  0.0000  0.9698  1
  Y  Y2  3  0.0000  0.0000  0.1881  1
  U  U3  3  0.0000  0.0000  0.6833  1
  O  O4  9  0.0559  0.3464  0.7530  1
  O  O5  9  0.0638  0.6963  0.2575  1
]