data_[Pu2Mg1Si6]
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
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [P6/mmm]
_cell_length_a [7.0284]
_cell_length_b [7.0284]
_cell_length_c [3.8444]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [191]
_chemical_formula_structural [Pu2MgSi6]
_chemical_formula_sum '[Pu2 Mg1 Si6]'
_cell_volume [164.4673]
_cell_formula_units_Z [1]
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  2  0.3333  0.6667  0.0000  1
  Mg  Mg1  1  0.0000  0.0000  0.0000  1
  Si  Si2  6  0.0000  0.3337  0.5000  1
]