data_[Pu4Mg4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pu  1.2800  1.7500  0.9675
  Mg  1.3100  1.5000  0.8600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [5.6169]
_cell_length_b [8.2578]
_cell_length_c [5.5666]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [PuMgO3]
_chemical_formula_sum '[Pu4 Mg4 O12]'
_cell_volume [258.1943]
_cell_formula_units_Z [4]
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
[
  Pu  Pu0  4  0.0000  0.0000  0.0000  1
  Mg  Mg1  4  0.0218  0.2500  0.4792  1
  O  O2  8  0.1592  0.5800  0.3437  1
  O  O3  4  0.1302  0.7500  0.8544  1
]