The structure described by Th3Si2 crystallizes in the tetragonal P4/mbm space group. There are two inequivalent Th sites. In the first Th site, Th(1) is bonded in a square co-planar geometry to four equivalent Si(1) atoms. In the second Th site, Th(2) is bonded in a 6-coordinate geometry to six equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to two equivalent Th(1), six equivalent Th(2), and one Si(1) atom. is represented by the CIF card [CIF]
data_Th3Si2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.156
_cell_length_b   7.867
_cell_length_c   7.867
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   257.219
_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
  Th  Th0  1  0.000  0.500  0.500  1.0
  Th  Th1  1  0.000  0.000  0.000  1.0
  Th  Th2  1  0.500  0.181  0.681  1.0
  Th  Th3  1  0.500  0.819  0.319  1.0
  Th  Th4  1  0.500  0.319  0.181  1.0
  Th  Th5  1  0.500  0.681  0.819  1.0
  Si  Si6  1  0.000  0.612  0.112  1.0
  Si  Si7  1  0.000  0.388  0.888  1.0
  Si  Si8  1  0.000  0.888  0.612  1.0
  Si  Si9  1  0.000  0.112  0.388  1.0
[/CIF]
.
The structure described by Th3Si2 crystallizes in the tetragonal P4/mbm space group. There are two inequivalent Th sites. In the first Th site, Th(1) is bonded in a square co-planar geometry to four equivalent Si(1) atoms. In the second Th site, Th(2) is bonded in a 6-coordinate geometry to six equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to two equivalent Th(1), six equivalent Th(2), and one Si(1) atom. is represented by the CIF card [CIF]
data_Th3Si2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.156
_cell_length_b   7.867
_cell_length_c   7.867
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   257.219
_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
  Th  Th0  1  0.000  0.500  0.500  1.0
  Th  Th1  1  0.000  0.000  0.000  1.0
  Th  Th2  1  0.500  0.181  0.681  1.0
  Th  Th3  1  0.500  0.819  0.319  1.0
  Th  Th4  1  0.500  0.319  0.181  1.0
  Th  Th5  1  0.500  0.681  0.819  1.0
  Si  Si6  1  0.000  0.612  0.112  1.0
  Si  Si7  1  0.000  0.388  0.888  1.0
  Si  Si8  1  0.000  0.888  0.612  1.0
  Si  Si9  1  0.000  0.112  0.388  1.0
[/CIF]
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