The structure described by Ce3Ni6Si2 crystallizes in the cubic Im-3m space group. Ce(1) is bonded in a 12-coordinate geometry to eight equivalent Ni(1) and four equivalent Si(1) atoms. Ni(1) is bonded in a 12-coordinate geometry to four equivalent Ce(1), six equivalent Ni(1), and two equivalent Si(1) atoms. Si(1) is bonded to six equivalent Ce(1) and six equivalent Ni(1) atoms to form a mixture of corner and face-sharing SiCe6Ni6 cuboctahedra. is represented by the CIF file [CIF]
data_Ce3(SiNi3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.588
_cell_length_b   7.588
_cell_length_c   7.589
_cell_angle_alpha   109.470
_cell_angle_beta   109.469
_cell_angle_gamma   109.470
_symmetry_Int_Tables_number   1
_cell_volume   336.410
_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
  Ce  Ce0  1  0.719  0.719  1.000  1.0
  Ce  Ce1  1  0.281  0.281  1.000  1.0
  Ce  Ce2  1  0.000  0.281  0.281  1.0
  Ce  Ce3  1  0.000  0.719  0.719  1.0
  Ce  Ce4  1  0.281  1.000  0.281  1.0
  Ce  Ce5  1  0.719  1.000  0.719  1.0
  Si  Si6  1  1.000  0.500  1.000  1.0
  Si  Si7  1  0.500  0.000  0.000  1.0
  Si  Si8  1  0.500  0.500  0.500  1.0
  Si  Si9  1  1.000  1.000  0.500  1.0
  Ni  Ni10  1  0.337  0.663  1.000  1.0
  Ni  Ni11  1  1.000  0.663  0.337  1.0
  Ni  Ni12  1  0.337  0.000  0.663  1.0
  Ni  Ni13  1  0.663  0.000  0.337  1.0
  Ni  Ni14  1  0.663  0.326  0.663  1.0
  Ni  Ni15  1  0.663  0.337  1.000  1.0
  Ni  Ni16  1  0.326  0.663  0.663  1.0
  Ni  Ni17  1  0.337  0.337  0.674  1.0
  Ni  Ni18  1  1.000  0.337  0.663  1.0
  Ni  Ni19  1  0.674  0.337  0.337  1.0
  Ni  Ni20  1  0.337  0.674  0.337  1.0
  Ni  Ni21  1  0.663  0.663  0.326  1.0
[/CIF]
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The structure described by Ce3Ni6Si2 crystallizes in the cubic Im-3m space group. Ce(1) is bonded in a 12-coordinate geometry to eight equivalent Ni(1) and four equivalent Si(1) atoms. Ni(1) is bonded in a 12-coordinate geometry to four equivalent Ce(1), six equivalent Ni(1), and two equivalent Si(1) atoms. Si(1) is bonded to six equivalent Ce(1) and six equivalent Ni(1) atoms to form a mixture of corner and face-sharing SiCe6Ni6 cuboctahedra. is represented by the CIF file [CIF]
data_Ce3(SiNi3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.588
_cell_length_b   7.588
_cell_length_c   7.589
_cell_angle_alpha   109.470
_cell_angle_beta   109.469
_cell_angle_gamma   109.470
_symmetry_Int_Tables_number   1
_cell_volume   336.410
_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
  Ce  Ce0  1  0.719  0.719  1.000  1.0
  Ce  Ce1  1  0.281  0.281  1.000  1.0
  Ce  Ce2  1  0.000  0.281  0.281  1.0
  Ce  Ce3  1  0.000  0.719  0.719  1.0
  Ce  Ce4  1  0.281  1.000  0.281  1.0
  Ce  Ce5  1  0.719  1.000  0.719  1.0
  Si  Si6  1  1.000  0.500  1.000  1.0
  Si  Si7  1  0.500  0.000  0.000  1.0
  Si  Si8  1  0.500  0.500  0.500  1.0
  Si  Si9  1  1.000  1.000  0.500  1.0
  Ni  Ni10  1  0.337  0.663  1.000  1.0
  Ni  Ni11  1  1.000  0.663  0.337  1.0
  Ni  Ni12  1  0.337  0.000  0.663  1.0
  Ni  Ni13  1  0.663  0.000  0.337  1.0
  Ni  Ni14  1  0.663  0.326  0.663  1.0
  Ni  Ni15  1  0.663  0.337  1.000  1.0
  Ni  Ni16  1  0.326  0.663  0.663  1.0
  Ni  Ni17  1  0.337  0.337  0.674  1.0
  Ni  Ni18  1  1.000  0.337  0.663  1.0
  Ni  Ni19  1  0.674  0.337  0.337  1.0
  Ni  Ni20  1  0.337  0.674  0.337  1.0
  Ni  Ni21  1  0.663  0.663  0.326  1.0
[/CIF]
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