The compound described by HoNi5Si3 crystallizes in the orthorhombic Pnma space group. Ho(1) is bonded in a 17-coordinate geometry to one Ni(3), one Ni(4), three equivalent Ni(1), three equivalent Ni(2), three equivalent Ni(5), two equivalent Si(1), two equivalent Si(2), and two equivalent Si(3) atoms. There are five inequivalent Ni sites. In the first Ni site, Ni(5) is bonded in a 12-coordinate geometry to three equivalent Ho(1), two equivalent Ni(4), three equivalent Ni(1), one Si(1), and three equivalent Si(2) atoms. In the second Ni site, Ni(1) is bonded in a 12-coordinate geometry to three equivalent Ho(1), two equivalent Ni(4), three equivalent Ni(5), one Si(3), and three equivalent Si(2) atoms. In the third Ni site, Ni(2) is bonded to three equivalent Ho(1), one Ni(4), two equivalent Ni(2), two equivalent Ni(3), one Si(1), and three equivalent Si(3) atoms to form distorted face-sharing NiHo3Si4Ni5 cuboctahedra. In the fourth Ni site, Ni(3) is bonded in a 10-coordinate geometry to one Ho(1), one Ni(4), two equivalent Ni(2), two equivalent Ni(3), one Si(3), and three equivalent Si(1) atoms. In the fifth Ni site, Ni(4) is bonded in a 5-coordinate geometry to one Ho(1), one Ni(2), one Ni(3), two equivalent Ni(1), two equivalent Ni(5), one Si(2), two equivalent Si(1), and two equivalent Si(3) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to two equivalent Ho(1), one Ni(2), one Ni(5), two equivalent Ni(4), and three equivalent Ni(3) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Ho(1), one Ni(4), three equivalent Ni(1), and three equivalent Ni(5) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to two equivalent Ho(1), one Ni(1), one Ni(3), two equivalent Ni(4), and three equivalent Ni(2) atoms. is represented by the CIF file [CIF]
data_HoSi3Ni5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.767
_cell_length_b   6.692
_cell_length_c   18.624
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   469.468
_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
  Ho  Ho0  1  0.250  0.622  0.644  1.0
  Ho  Ho1  1  0.250  0.878  0.144  1.0
  Ho  Ho2  1  0.750  0.378  0.356  1.0
  Ho  Ho3  1  0.750  0.122  0.856  1.0
  Si  Si4  1  0.250  0.413  0.915  1.0
  Si  Si5  1  0.250  0.087  0.415  1.0
  Si  Si6  1  0.750  0.587  0.085  1.0
  Si  Si7  1  0.750  0.913  0.585  1.0
  Si  Si8  1  0.250  0.122  0.737  1.0
  Si  Si9  1  0.250  0.378  0.237  1.0
  Si  Si10  1  0.750  0.878  0.263  1.0
  Si  Si11  1  0.750  0.622  0.763  1.0
  Si  Si12  1  0.250  0.847  0.924  1.0
  Si  Si13  1  0.250  0.653  0.424  1.0
  Si  Si14  1  0.750  0.153  0.076  1.0
  Si  Si15  1  0.750  0.347  0.576  1.0
  Ni  Ni16  1  0.250  0.815  0.799  1.0
  Ni  Ni17  1  0.250  0.685  0.299  1.0
  Ni  Ni18  1  0.750  0.185  0.201  1.0
  Ni  Ni19  1  0.750  0.315  0.701  1.0
  Ni  Ni20  1  0.250  0.132  0.994  1.0
  Ni  Ni21  1  0.250  0.368  0.494  1.0
  Ni  Ni22  1  0.750  0.868  0.006  1.0
  Ni  Ni23  1  0.750  0.632  0.506  1.0
  Ni  Ni24  1  0.250  0.881  0.514  1.0
  Ni  Ni25  1  0.250  0.619  0.014  1.0
  Ni  Ni26  1  0.750  0.119  0.486  1.0
  Ni  Ni27  1  0.750  0.381  0.986  1.0
  Ni  Ni28  1  0.250  0.144  0.614  1.0
  Ni  Ni29  1  0.250  0.356  0.114  1.0
  Ni  Ni30  1  0.750  0.856  0.386  1.0
  Ni  Ni31  1  0.750  0.644  0.886  1.0
  Ni  Ni32  1  0.250  0.429  0.795  1.0
  Ni  Ni33  1  0.250  0.071  0.295  1.0
  Ni  Ni34  1  0.750  0.571  0.205  1.0
  Ni  Ni35  1  0.750  0.929  0.705  1.0
[/CIF]
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The compound described by HoNi5Si3 crystallizes in the orthorhombic Pnma space group. Ho(1) is bonded in a 17-coordinate geometry to one Ni(3), one Ni(4), three equivalent Ni(1), three equivalent Ni(2), three equivalent Ni(5), two equivalent Si(1), two equivalent Si(2), and two equivalent Si(3) atoms. There are five inequivalent Ni sites. In the first Ni site, Ni(5) is bonded in a 12-coordinate geometry to three equivalent Ho(1), two equivalent Ni(4), three equivalent Ni(1), one Si(1), and three equivalent Si(2) atoms. In the second Ni site, Ni(1) is bonded in a 12-coordinate geometry to three equivalent Ho(1), two equivalent Ni(4), three equivalent Ni(5), one Si(3), and three equivalent Si(2) atoms. In the third Ni site, Ni(2) is bonded to three equivalent Ho(1), one Ni(4), two equivalent Ni(2), two equivalent Ni(3), one Si(1), and three equivalent Si(3) atoms to form distorted face-sharing NiHo3Si4Ni5 cuboctahedra. In the fourth Ni site, Ni(3) is bonded in a 10-coordinate geometry to one Ho(1), one Ni(4), two equivalent Ni(2), two equivalent Ni(3), one Si(3), and three equivalent Si(1) atoms. In the fifth Ni site, Ni(4) is bonded in a 5-coordinate geometry to one Ho(1), one Ni(2), one Ni(3), two equivalent Ni(1), two equivalent Ni(5), one Si(2), two equivalent Si(1), and two equivalent Si(3) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to two equivalent Ho(1), one Ni(2), one Ni(5), two equivalent Ni(4), and three equivalent Ni(3) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Ho(1), one Ni(4), three equivalent Ni(1), and three equivalent Ni(5) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to two equivalent Ho(1), one Ni(1), one Ni(3), two equivalent Ni(4), and three equivalent Ni(2) atoms. is represented by the CIF file [CIF]
data_HoSi3Ni5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.767
_cell_length_b   6.692
_cell_length_c   18.624
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   469.468
_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
  Ho  Ho0  1  0.250  0.622  0.644  1.0
  Ho  Ho1  1  0.250  0.878  0.144  1.0
  Ho  Ho2  1  0.750  0.378  0.356  1.0
  Ho  Ho3  1  0.750  0.122  0.856  1.0
  Si  Si4  1  0.250  0.413  0.915  1.0
  Si  Si5  1  0.250  0.087  0.415  1.0
  Si  Si6  1  0.750  0.587  0.085  1.0
  Si  Si7  1  0.750  0.913  0.585  1.0
  Si  Si8  1  0.250  0.122  0.737  1.0
  Si  Si9  1  0.250  0.378  0.237  1.0
  Si  Si10  1  0.750  0.878  0.263  1.0
  Si  Si11  1  0.750  0.622  0.763  1.0
  Si  Si12  1  0.250  0.847  0.924  1.0
  Si  Si13  1  0.250  0.653  0.424  1.0
  Si  Si14  1  0.750  0.153  0.076  1.0
  Si  Si15  1  0.750  0.347  0.576  1.0
  Ni  Ni16  1  0.250  0.815  0.799  1.0
  Ni  Ni17  1  0.250  0.685  0.299  1.0
  Ni  Ni18  1  0.750  0.185  0.201  1.0
  Ni  Ni19  1  0.750  0.315  0.701  1.0
  Ni  Ni20  1  0.250  0.132  0.994  1.0
  Ni  Ni21  1  0.250  0.368  0.494  1.0
  Ni  Ni22  1  0.750  0.868  0.006  1.0
  Ni  Ni23  1  0.750  0.632  0.506  1.0
  Ni  Ni24  1  0.250  0.881  0.514  1.0
  Ni  Ni25  1  0.250  0.619  0.014  1.0
  Ni  Ni26  1  0.750  0.119  0.486  1.0
  Ni  Ni27  1  0.750  0.381  0.986  1.0
  Ni  Ni28  1  0.250  0.144  0.614  1.0
  Ni  Ni29  1  0.250  0.356  0.114  1.0
  Ni  Ni30  1  0.750  0.856  0.386  1.0
  Ni  Ni31  1  0.750  0.644  0.886  1.0
  Ni  Ni32  1  0.250  0.429  0.795  1.0
  Ni  Ni33  1  0.250  0.071  0.295  1.0
  Ni  Ni34  1  0.750  0.571  0.205  1.0
  Ni  Ni35  1  0.750  0.929  0.705  1.0
[/CIF]
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