The compound described by Ho(Ni5Si)2 crystallizes in the tetragonal P4/nmm space group. Ho(1) is bonded in a 20-coordinate geometry to four equivalent Ni(1), four equivalent Ni(2), eight equivalent Ni(3), and four equivalent Si(1) atoms. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent Ho(1), four equivalent Ni(2), four equivalent Ni(3), and two equivalent Si(1) atoms to form NiHo2Si2Ni8 cuboctahedra that share corners with four equivalent Ni(1)Ho2Si2Ni8 cuboctahedra, corners with six equivalent Si(1)Ho2Ni10 cuboctahedra, corners with eight equivalent Ni(3)Ho2Si2Ni8 cuboctahedra, edges with four equivalent Ni(3)Ho2Si2Ni8 cuboctahedra, edges with four equivalent Si(1)Ho2Ni10 cuboctahedra, faces with two equivalent Si(1)Ho2Ni10 cuboctahedra, faces with four equivalent Ni(1)Ho2Si2Ni8 cuboctahedra, and faces with eight equivalent Ni(3)Ho2Si2Ni8 cuboctahedra. In the second Ni site, Ni(2) is bonded in a 14-coordinate geometry to one Ho(1), two equivalent Ni(1), four equivalent Ni(3), five equivalent Ni(2), and two equivalent Si(1) atoms. In the third Ni site, Ni(3) is bonded to two equivalent Ho(1), two equivalent Ni(1), two equivalent Ni(3), four equivalent Ni(2), and two equivalent Si(1) atoms to form distorted NiHo2Si2Ni8 cuboctahedra that share corners with four equivalent Ni(1)Ho2Si2Ni8 cuboctahedra, corners with four equivalent Si(1)Ho2Ni10 cuboctahedra, corners with ten equivalent Ni(3)Ho2Si2Ni8 cuboctahedra, edges with two equivalent Ni(1)Ho2Si2Ni8 cuboctahedra, edges with two equivalent Si(1)Ho2Ni10 cuboctahedra, edges with three equivalent Ni(3)Ho2Si2Ni8 cuboctahedra, faces with four equivalent Ni(1)Ho2Si2Ni8 cuboctahedra, faces with four equivalent Si(1)Ho2Ni10 cuboctahedra, and faces with seven equivalent Ni(3)Ho2Si2Ni8 cuboctahedra. Si(1) is bonded to two equivalent Ho(1), two equivalent Ni(1), four equivalent Ni(2), and four equivalent Ni(3) atoms to form distorted SiHo2Ni10 cuboctahedra that share corners with four equivalent Si(1)Ho2Ni10 cuboctahedra, corners with six equivalent Ni(1)Ho2Si2Ni8 cuboctahedra, corners with eight equivalent Ni(3)Ho2Si2Ni8 cuboctahedra, edges with four equivalent Ni(1)Ho2Si2Ni8 cuboctahedra, edges with four equivalent Ni(3)Ho2Si2Ni8 cuboctahedra, faces with two equivalent Ni(1)Ho2Si2Ni8 cuboctahedra, faces with four equivalent Si(1)Ho2Ni10 cuboctahedra, and faces with eight equivalent Ni(3)Ho2Si2Ni8 cuboctahedra. is represented by the CIF card [CIF]
data_Ho(SiNi5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.077
_cell_length_b   8.077
_cell_length_c   4.629
_cell_angle_alpha   90.001
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   302.048
_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
  Ho  Ho0  1  0.000  0.500  0.220  1.0
  Ho  Ho1  1  0.500  0.000  0.780  1.0
  Si  Si2  1  0.750  0.750  0.500  1.0
  Si  Si3  1  0.250  0.750  0.500  1.0
  Si  Si4  1  0.750  0.250  0.500  1.0
  Si  Si5  1  0.250  0.250  0.500  1.0
  Ni  Ni6  1  0.750  0.250  1.000  1.0
  Ni  Ni7  1  0.750  0.750  1.000  1.0
  Ni  Ni8  1  0.250  0.250  1.000  1.0
  Ni  Ni9  1  0.250  0.750  1.000  1.0
  Ni  Ni10  1  0.353  0.500  0.238  1.0
  Ni  Ni11  1  1.000  0.147  0.238  1.0
  Ni  Ni12  1  1.000  0.853  0.239  1.0
  Ni  Ni13  1  0.647  0.500  0.238  1.0
  Ni  Ni14  1  0.147  1.000  0.762  1.0
  Ni  Ni15  1  0.853  1.000  0.762  1.0
  Ni  Ni16  1  0.500  0.353  0.762  1.0
  Ni  Ni17  1  0.500  0.647  0.762  1.0
  Ni  Ni18  1  0.776  0.500  0.729  1.0
  Ni  Ni19  1  1.000  0.724  0.729  1.0
  Ni  Ni20  1  1.000  0.276  0.729  1.0
  Ni  Ni21  1  0.224  0.500  0.729  1.0
  Ni  Ni22  1  0.724  0.000  0.271  1.0
  Ni  Ni23  1  0.276  0.000  0.271  1.0
  Ni  Ni24  1  0.500  0.776  0.271  1.0
  Ni  Ni25  1  0.500  0.224  0.271  1.0
[/CIF]
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The compound described by Ho(Ni5Si)2 crystallizes in the tetragonal P4/nmm space group. Ho(1) is bonded in a 20-coordinate geometry to four equivalent Ni(1), four equivalent Ni(2), eight equivalent Ni(3), and four equivalent Si(1) atoms. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent Ho(1), four equivalent Ni(2), four equivalent Ni(3), and two equivalent Si(1) atoms to form NiHo2Si2Ni8 cuboctahedra that share corners with four equivalent Ni(1)Ho2Si2Ni8 cuboctahedra, corners with six equivalent Si(1)Ho2Ni10 cuboctahedra, corners with eight equivalent Ni(3)Ho2Si2Ni8 cuboctahedra, edges with four equivalent Ni(3)Ho2Si2Ni8 cuboctahedra, edges with four equivalent Si(1)Ho2Ni10 cuboctahedra, faces with two equivalent Si(1)Ho2Ni10 cuboctahedra, faces with four equivalent Ni(1)Ho2Si2Ni8 cuboctahedra, and faces with eight equivalent Ni(3)Ho2Si2Ni8 cuboctahedra. In the second Ni site, Ni(2) is bonded in a 14-coordinate geometry to one Ho(1), two equivalent Ni(1), four equivalent Ni(3), five equivalent Ni(2), and two equivalent Si(1) atoms. In the third Ni site, Ni(3) is bonded to two equivalent Ho(1), two equivalent Ni(1), two equivalent Ni(3), four equivalent Ni(2), and two equivalent Si(1) atoms to form distorted NiHo2Si2Ni8 cuboctahedra that share corners with four equivalent Ni(1)Ho2Si2Ni8 cuboctahedra, corners with four equivalent Si(1)Ho2Ni10 cuboctahedra, corners with ten equivalent Ni(3)Ho2Si2Ni8 cuboctahedra, edges with two equivalent Ni(1)Ho2Si2Ni8 cuboctahedra, edges with two equivalent Si(1)Ho2Ni10 cuboctahedra, edges with three equivalent Ni(3)Ho2Si2Ni8 cuboctahedra, faces with four equivalent Ni(1)Ho2Si2Ni8 cuboctahedra, faces with four equivalent Si(1)Ho2Ni10 cuboctahedra, and faces with seven equivalent Ni(3)Ho2Si2Ni8 cuboctahedra. Si(1) is bonded to two equivalent Ho(1), two equivalent Ni(1), four equivalent Ni(2), and four equivalent Ni(3) atoms to form distorted SiHo2Ni10 cuboctahedra that share corners with four equivalent Si(1)Ho2Ni10 cuboctahedra, corners with six equivalent Ni(1)Ho2Si2Ni8 cuboctahedra, corners with eight equivalent Ni(3)Ho2Si2Ni8 cuboctahedra, edges with four equivalent Ni(1)Ho2Si2Ni8 cuboctahedra, edges with four equivalent Ni(3)Ho2Si2Ni8 cuboctahedra, faces with two equivalent Ni(1)Ho2Si2Ni8 cuboctahedra, faces with four equivalent Si(1)Ho2Ni10 cuboctahedra, and faces with eight equivalent Ni(3)Ho2Si2Ni8 cuboctahedra. is represented by the CIF card [CIF]
data_Ho(SiNi5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.077
_cell_length_b   8.077
_cell_length_c   4.629
_cell_angle_alpha   90.001
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   302.048
_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
  Ho  Ho0  1  0.000  0.500  0.220  1.0
  Ho  Ho1  1  0.500  0.000  0.780  1.0
  Si  Si2  1  0.750  0.750  0.500  1.0
  Si  Si3  1  0.250  0.750  0.500  1.0
  Si  Si4  1  0.750  0.250  0.500  1.0
  Si  Si5  1  0.250  0.250  0.500  1.0
  Ni  Ni6  1  0.750  0.250  1.000  1.0
  Ni  Ni7  1  0.750  0.750  1.000  1.0
  Ni  Ni8  1  0.250  0.250  1.000  1.0
  Ni  Ni9  1  0.250  0.750  1.000  1.0
  Ni  Ni10  1  0.353  0.500  0.238  1.0
  Ni  Ni11  1  1.000  0.147  0.238  1.0
  Ni  Ni12  1  1.000  0.853  0.239  1.0
  Ni  Ni13  1  0.647  0.500  0.238  1.0
  Ni  Ni14  1  0.147  1.000  0.762  1.0
  Ni  Ni15  1  0.853  1.000  0.762  1.0
  Ni  Ni16  1  0.500  0.353  0.762  1.0
  Ni  Ni17  1  0.500  0.647  0.762  1.0
  Ni  Ni18  1  0.776  0.500  0.729  1.0
  Ni  Ni19  1  1.000  0.724  0.729  1.0
  Ni  Ni20  1  1.000  0.276  0.729  1.0
  Ni  Ni21  1  0.224  0.500  0.729  1.0
  Ni  Ni22  1  0.724  0.000  0.271  1.0
  Ni  Ni23  1  0.276  0.000  0.271  1.0
  Ni  Ni24  1  0.500  0.776  0.271  1.0
  Ni  Ni25  1  0.500  0.224  0.271  1.0
[/CIF]
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