The compound described by TbNi10Si2 crystallizes in the tetragonal P4/nmm space group. Tb(1) is bonded in a 20-coordinate geometry to four equivalent Ni(1), four equivalent Ni(3), eight equivalent Ni(2), and four equivalent Si(1) atoms. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent Tb(1), four equivalent Ni(2), four equivalent Ni(3), and two equivalent Si(1) atoms to form NiTb2Si2Ni8 cuboctahedra that share corners with four equivalent Ni(1)Tb2Si2Ni8 cuboctahedra, corners with six equivalent Si(1)Tb2Ni10 cuboctahedra, corners with eight equivalent Ni(2)Tb2Si2Ni8 cuboctahedra, edges with four equivalent Ni(2)Tb2Si2Ni8 cuboctahedra, edges with four equivalent Si(1)Tb2Ni10 cuboctahedra, faces with two equivalent Si(1)Tb2Ni10 cuboctahedra, faces with four equivalent Ni(1)Tb2Si2Ni8 cuboctahedra, and faces with eight equivalent Ni(2)Tb2Si2Ni8 cuboctahedra. In the second Ni site, Ni(2) is bonded to two equivalent Tb(1), two equivalent Ni(1), two equivalent Ni(2), four equivalent Ni(3), and two equivalent Si(1) atoms to form distorted NiTb2Si2Ni8 cuboctahedra that share corners with four equivalent Ni(1)Tb2Si2Ni8 cuboctahedra, corners with four equivalent Si(1)Tb2Ni10 cuboctahedra, corners with ten equivalent Ni(2)Tb2Si2Ni8 cuboctahedra, edges with two equivalent Ni(1)Tb2Si2Ni8 cuboctahedra, edges with two equivalent Si(1)Tb2Ni10 cuboctahedra, edges with three equivalent Ni(2)Tb2Si2Ni8 cuboctahedra, faces with four equivalent Ni(1)Tb2Si2Ni8 cuboctahedra, faces with four equivalent Si(1)Tb2Ni10 cuboctahedra, and faces with seven equivalent Ni(2)Tb2Si2Ni8 cuboctahedra. In the third Ni site, Ni(3) is bonded in a 14-coordinate geometry to one Tb(1), two equivalent Ni(1), four equivalent Ni(2), five equivalent Ni(3), and two equivalent Si(1) atoms. Si(1) is bonded to two equivalent Tb(1), two equivalent Ni(1), four equivalent Ni(2), and four equivalent Ni(3) atoms to form distorted SiTb2Ni10 cuboctahedra that share corners with four equivalent Si(1)Tb2Ni10 cuboctahedra, corners with six equivalent Ni(1)Tb2Si2Ni8 cuboctahedra, corners with eight equivalent Ni(2)Tb2Si2Ni8 cuboctahedra, edges with four equivalent Ni(1)Tb2Si2Ni8 cuboctahedra, edges with four equivalent Ni(2)Tb2Si2Ni8 cuboctahedra, faces with two equivalent Ni(1)Tb2Si2Ni8 cuboctahedra, faces with four equivalent Si(1)Tb2Ni10 cuboctahedra, and faces with eight equivalent Ni(2)Tb2Si2Ni8 cuboctahedra. is represented by the CIF card [CIF]
data_Tb(SiNi5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.096
_cell_length_b   8.096
_cell_length_c   4.634
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   303.738
_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
  Tb  Tb0  1  0.500  0.000  0.780  1.0
  Tb  Tb1  1  0.000  0.500  0.220  1.0
  Si  Si2  1  0.750  0.750  0.500  1.0
  Si  Si3  1  0.250  0.250  0.500  1.0
  Si  Si4  1  0.750  0.250  0.500  1.0
  Si  Si5  1  0.250  0.750  0.500  1.0
  Ni  Ni6  1  0.250  0.250  0.000  1.0
  Ni  Ni7  1  0.250  0.750  0.000  1.0
  Ni  Ni8  1  0.500  0.226  0.271  1.0
  Ni  Ni9  1  0.750  0.750  0.000  1.0
  Ni  Ni10  1  0.750  0.250  0.000  1.0
  Ni  Ni11  1  0.500  0.774  0.271  1.0
  Ni  Ni12  1  0.353  0.500  0.238  1.0
  Ni  Ni13  1  0.000  0.147  0.238  1.0
  Ni  Ni14  1  0.000  0.853  0.238  1.0
  Ni  Ni15  1  0.647  0.500  0.238  1.0
  Ni  Ni16  1  0.147  0.000  0.762  1.0
  Ni  Ni17  1  0.853  0.000  0.762  1.0
  Ni  Ni18  1  0.500  0.353  0.762  1.0
  Ni  Ni19  1  0.500  0.647  0.762  1.0
  Ni  Ni20  1  0.774  0.500  0.729  1.0
  Ni  Ni21  1  0.000  0.726  0.729  1.0
  Ni  Ni22  1  0.000  0.274  0.729  1.0
  Ni  Ni23  1  0.226  0.500  0.729  1.0
  Ni  Ni24  1  0.726  0.000  0.271  1.0
  Ni  Ni25  1  0.274  0.000  0.271  1.0
[/CIF]
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The compound described by TbNi10Si2 crystallizes in the tetragonal P4/nmm space group. Tb(1) is bonded in a 20-coordinate geometry to four equivalent Ni(1), four equivalent Ni(3), eight equivalent Ni(2), and four equivalent Si(1) atoms. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent Tb(1), four equivalent Ni(2), four equivalent Ni(3), and two equivalent Si(1) atoms to form NiTb2Si2Ni8 cuboctahedra that share corners with four equivalent Ni(1)Tb2Si2Ni8 cuboctahedra, corners with six equivalent Si(1)Tb2Ni10 cuboctahedra, corners with eight equivalent Ni(2)Tb2Si2Ni8 cuboctahedra, edges with four equivalent Ni(2)Tb2Si2Ni8 cuboctahedra, edges with four equivalent Si(1)Tb2Ni10 cuboctahedra, faces with two equivalent Si(1)Tb2Ni10 cuboctahedra, faces with four equivalent Ni(1)Tb2Si2Ni8 cuboctahedra, and faces with eight equivalent Ni(2)Tb2Si2Ni8 cuboctahedra. In the second Ni site, Ni(2) is bonded to two equivalent Tb(1), two equivalent Ni(1), two equivalent Ni(2), four equivalent Ni(3), and two equivalent Si(1) atoms to form distorted NiTb2Si2Ni8 cuboctahedra that share corners with four equivalent Ni(1)Tb2Si2Ni8 cuboctahedra, corners with four equivalent Si(1)Tb2Ni10 cuboctahedra, corners with ten equivalent Ni(2)Tb2Si2Ni8 cuboctahedra, edges with two equivalent Ni(1)Tb2Si2Ni8 cuboctahedra, edges with two equivalent Si(1)Tb2Ni10 cuboctahedra, edges with three equivalent Ni(2)Tb2Si2Ni8 cuboctahedra, faces with four equivalent Ni(1)Tb2Si2Ni8 cuboctahedra, faces with four equivalent Si(1)Tb2Ni10 cuboctahedra, and faces with seven equivalent Ni(2)Tb2Si2Ni8 cuboctahedra. In the third Ni site, Ni(3) is bonded in a 14-coordinate geometry to one Tb(1), two equivalent Ni(1), four equivalent Ni(2), five equivalent Ni(3), and two equivalent Si(1) atoms. Si(1) is bonded to two equivalent Tb(1), two equivalent Ni(1), four equivalent Ni(2), and four equivalent Ni(3) atoms to form distorted SiTb2Ni10 cuboctahedra that share corners with four equivalent Si(1)Tb2Ni10 cuboctahedra, corners with six equivalent Ni(1)Tb2Si2Ni8 cuboctahedra, corners with eight equivalent Ni(2)Tb2Si2Ni8 cuboctahedra, edges with four equivalent Ni(1)Tb2Si2Ni8 cuboctahedra, edges with four equivalent Ni(2)Tb2Si2Ni8 cuboctahedra, faces with two equivalent Ni(1)Tb2Si2Ni8 cuboctahedra, faces with four equivalent Si(1)Tb2Ni10 cuboctahedra, and faces with eight equivalent Ni(2)Tb2Si2Ni8 cuboctahedra. is represented by the CIF card [CIF]
data_Tb(SiNi5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.096
_cell_length_b   8.096
_cell_length_c   4.634
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   303.738
_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
  Tb  Tb0  1  0.500  0.000  0.780  1.0
  Tb  Tb1  1  0.000  0.500  0.220  1.0
  Si  Si2  1  0.750  0.750  0.500  1.0
  Si  Si3  1  0.250  0.250  0.500  1.0
  Si  Si4  1  0.750  0.250  0.500  1.0
  Si  Si5  1  0.250  0.750  0.500  1.0
  Ni  Ni6  1  0.250  0.250  0.000  1.0
  Ni  Ni7  1  0.250  0.750  0.000  1.0
  Ni  Ni8  1  0.500  0.226  0.271  1.0
  Ni  Ni9  1  0.750  0.750  0.000  1.0
  Ni  Ni10  1  0.750  0.250  0.000  1.0
  Ni  Ni11  1  0.500  0.774  0.271  1.0
  Ni  Ni12  1  0.353  0.500  0.238  1.0
  Ni  Ni13  1  0.000  0.147  0.238  1.0
  Ni  Ni14  1  0.000  0.853  0.238  1.0
  Ni  Ni15  1  0.647  0.500  0.238  1.0
  Ni  Ni16  1  0.147  0.000  0.762  1.0
  Ni  Ni17  1  0.853  0.000  0.762  1.0
  Ni  Ni18  1  0.500  0.353  0.762  1.0
  Ni  Ni19  1  0.500  0.647  0.762  1.0
  Ni  Ni20  1  0.774  0.500  0.729  1.0
  Ni  Ni21  1  0.000  0.726  0.729  1.0
  Ni  Ni22  1  0.000  0.274  0.729  1.0
  Ni  Ni23  1  0.226  0.500  0.729  1.0
  Ni  Ni24  1  0.726  0.000  0.271  1.0
  Ni  Ni25  1  0.274  0.000  0.271  1.0
[/CIF]
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