The compound described by Ta3Ni2Si crystallizes in the cubic Fd-3m space group. Ta(1) is bonded in a 6-coordinate geometry to four equivalent Ni(1) and two equivalent Si(1) atoms. Ni(1) is bonded in a 12-coordinate geometry to six equivalent Ta(1), three equivalent Ni(1), and three equivalent Si(1) atoms. Si(1) is bonded to six equivalent Ta(1) and six equivalent Ni(1) atoms to form face-sharing SiTa6Ni6 cuboctahedra. is represented by the CIF file [CIF]
data_Ta3SiNi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.912
_cell_length_b   7.912
_cell_length_c   7.912
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   350.259
_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
  Ta  Ta0  1  0.702  0.298  0.702  1.0
  Ta  Ta1  1  0.952  0.548  0.548  1.0
  Ta  Ta2  1  0.548  0.952  0.952  1.0
  Ta  Ta3  1  0.952  0.548  0.952  1.0
  Ta  Ta4  1  0.548  0.548  0.952  1.0
  Ta  Ta5  1  0.952  0.952  0.548  1.0
  Ta  Ta6  1  0.702  0.702  0.298  1.0
  Ta  Ta7  1  0.298  0.702  0.702  1.0
  Ta  Ta8  1  0.702  0.298  0.298  1.0
  Ta  Ta9  1  0.298  0.298  0.702  1.0
  Ta  Ta10  1  0.548  0.952  0.548  1.0
  Ta  Ta11  1  0.298  0.702  0.298  1.0
  Si  Si12  1  0.125  0.125  0.125  1.0
  Si  Si13  1  0.625  0.125  0.125  1.0
  Si  Si14  1  0.125  0.625  0.125  1.0
  Si  Si15  1  0.125  0.125  0.625  1.0
  Ni  Ni16  1  0.333  0.333  0.333  1.0
  Ni  Ni17  1  0.248  0.917  0.917  1.0
  Ni  Ni18  1  0.917  0.248  0.917  1.0
  Ni  Ni19  1  0.917  0.917  0.248  1.0
  Ni  Ni20  1  0.333  0.002  0.333  1.0
  Ni  Ni21  1  0.333  0.333  0.002  1.0
  Ni  Ni22  1  0.002  0.333  0.333  1.0
  Ni  Ni23  1  0.917  0.917  0.917  1.0
[/CIF]
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The compound described by Ta3Ni2Si crystallizes in the cubic Fd-3m space group. Ta(1) is bonded in a 6-coordinate geometry to four equivalent Ni(1) and two equivalent Si(1) atoms. Ni(1) is bonded in a 12-coordinate geometry to six equivalent Ta(1), three equivalent Ni(1), and three equivalent Si(1) atoms. Si(1) is bonded to six equivalent Ta(1) and six equivalent Ni(1) atoms to form face-sharing SiTa6Ni6 cuboctahedra. is represented by the CIF file [CIF]
data_Ta3SiNi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.912
_cell_length_b   7.912
_cell_length_c   7.912
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   350.259
_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
  Ta  Ta0  1  0.702  0.298  0.702  1.0
  Ta  Ta1  1  0.952  0.548  0.548  1.0
  Ta  Ta2  1  0.548  0.952  0.952  1.0
  Ta  Ta3  1  0.952  0.548  0.952  1.0
  Ta  Ta4  1  0.548  0.548  0.952  1.0
  Ta  Ta5  1  0.952  0.952  0.548  1.0
  Ta  Ta6  1  0.702  0.702  0.298  1.0
  Ta  Ta7  1  0.298  0.702  0.702  1.0
  Ta  Ta8  1  0.702  0.298  0.298  1.0
  Ta  Ta9  1  0.298  0.298  0.702  1.0
  Ta  Ta10  1  0.548  0.952  0.548  1.0
  Ta  Ta11  1  0.298  0.702  0.298  1.0
  Si  Si12  1  0.125  0.125  0.125  1.0
  Si  Si13  1  0.625  0.125  0.125  1.0
  Si  Si14  1  0.125  0.625  0.125  1.0
  Si  Si15  1  0.125  0.125  0.625  1.0
  Ni  Ni16  1  0.333  0.333  0.333  1.0
  Ni  Ni17  1  0.248  0.917  0.917  1.0
  Ni  Ni18  1  0.917  0.248  0.917  1.0
  Ni  Ni19  1  0.917  0.917  0.248  1.0
  Ni  Ni20  1  0.333  0.002  0.333  1.0
  Ni  Ni21  1  0.333  0.333  0.002  1.0
  Ni  Ni22  1  0.002  0.333  0.333  1.0
  Ni  Ni23  1  0.917  0.917  0.917  1.0
[/CIF]
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