data_[Sr3Pu3Hg6O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Pu  1.2800  1.7500  0.9675
  Hg  2.0000  1.5000  1.2450
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [5.9844]
_cell_length_b [5.9844]
_cell_length_c [15.5032]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [SrPu(HgO3)2]
_chemical_formula_sum '[Sr3 Pu3 Hg6 O18]'
_cell_volume [480.8280]
_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
[
  Sr  Sr0  3  0.0000  0.0000  0.0000  1
  Pu  Pu1  3  0.0000  -0.0000  0.5000  1
  Hg  Hg2  6  0.0000  0.0000  0.2568  1
  O  O3  18  0.0121  0.2888  0.5787  1
]