The crystal structure described by PuSi2 is hexagonal omega structure-like structured and crystallizes in the tetragonal I4_1/amd space group. Pu(1) is bonded to twelve equivalent Si(1) atoms to form a mixture of edge and face-sharing PuSi12 cuboctahedra. Si(1) is bonded in a 9-coordinate geometry to six equivalent Pu(1) and three equivalent Si(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_PuSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.518
_cell_length_b   7.518
_cell_length_c   7.518
_cell_angle_alpha   148.918
_cell_angle_beta   148.918
_cell_angle_gamma   44.532
_symmetry_Int_Tables_number   1
_cell_volume   112.920
_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
  Pu  Pu0  1  0.500  0.500  0.000  1.0
  Pu  Pu1  1  0.250  0.750  0.500  1.0
  Si  Si2  1  0.833  0.333  0.500  1.0
  Si  Si3  1  0.083  0.083  0.000  1.0
  Si  Si4  1  0.667  0.167  0.500  1.0
  Si  Si5  1  0.917  0.917  0.000  1.0
[/CIF]
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The crystal structure described by PuSi2 is hexagonal omega structure-like structured and crystallizes in the tetragonal I4_1/amd space group. Pu(1) is bonded to twelve equivalent Si(1) atoms to form a mixture of edge and face-sharing PuSi12 cuboctahedra. Si(1) is bonded in a 9-coordinate geometry to six equivalent Pu(1) and three equivalent Si(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_PuSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.518
_cell_length_b   7.518
_cell_length_c   7.518
_cell_angle_alpha   148.918
_cell_angle_beta   148.918
_cell_angle_gamma   44.532
_symmetry_Int_Tables_number   1
_cell_volume   112.920
_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
  Pu  Pu0  1  0.500  0.500  0.000  1.0
  Pu  Pu1  1  0.250  0.750  0.500  1.0
  Si  Si2  1  0.833  0.333  0.500  1.0
  Si  Si3  1  0.083  0.083  0.000  1.0
  Si  Si4  1  0.667  0.167  0.500  1.0
  Si  Si5  1  0.917  0.917  0.000  1.0
[/CIF]
.