data_[Na4Pu4Hg14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Pu  1.2800  1.7500  0.9675
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [9.5672]
_cell_length_b [11.2090]
_cell_length_c [6.1153]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Na2Pu2Hg7]
_chemical_formula_sum '[Na4 Pu4 Hg14]'
_cell_volume [655.7909]
_cell_formula_units_Z [2]
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  4  0.0000  0.2667  0.0000  1
  Pu  Pu1  4  0.1766  0.0000  0.5000  1
  Hg  Hg2  8  0.2500  0.2500  0.2592  1
  Hg  Hg3  4  0.0000  0.5000  0.2570  1
  Hg  Hg4  2  0.0000  0.0000  0.0000  1
]