The compound described by Ho2Ni3Si5 crystallizes in the orthorhombic Ibam space group. Ho(1) is bonded in a 13-coordinate geometry to two equivalent Ni(2), five equivalent Ni(1), two equivalent Si(1), four equivalent Si(2), and four equivalent Si(3) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 10-coordinate geometry to five equivalent Ho(1), one Si(3), two equivalent Si(1), and two equivalent Si(2) atoms. In the second Ni site, Ni(2) is bonded to four equivalent Ho(1), two equivalent Ni(2), two equivalent Si(2), and four equivalent Si(3) atoms to form a mixture of distorted corner and face-sharing NiHo4Si6Ni2 cuboctahedra. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 8-coordinate geometry to four equivalent Ho(1) and four equivalent Ni(1) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Ho(1), one Ni(2), two equivalent Ni(1), and two equivalent Si(3) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to four equivalent Ho(1), one Ni(1), two equivalent Ni(2), and two equivalent Si(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ho2Si5Ni3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.850
_cell_length_b   7.850
_cell_length_c   7.850
_cell_angle_alpha   137.940
_cell_angle_beta   104.876
_cell_angle_gamma   90.048
_symmetry_Int_Tables_number   1
_cell_volume   299.188
_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  0.105  0.869  0.236  1.0
  Ho  Ho1  1  0.895  0.131  0.764  1.0
  Ho  Ho2  1  0.368  0.631  0.736  1.0
  Ho  Ho3  1  0.632  0.369  0.264  1.0
  Si  Si4  1  0.000  0.750  0.750  1.0
  Si  Si5  1  0.000  0.250  0.250  1.0
  Si  Si6  1  0.267  0.017  0.750  1.0
  Si  Si7  1  0.733  0.483  0.750  1.0
  Si  Si8  1  0.733  0.983  0.250  1.0
  Si  Si9  1  0.267  0.517  0.250  1.0
  Si  Si10  1  0.760  0.607  0.153  1.0
  Si  Si11  1  0.454  0.107  0.347  1.0
  Si  Si12  1  0.546  0.893  0.653  1.0
  Si  Si13  1  0.240  0.393  0.847  1.0
  Ni  Ni14  1  0.247  0.135  0.112  1.0
  Ni  Ni15  1  0.500  0.250  0.750  1.0
  Ni  Ni16  1  0.022  0.635  0.388  1.0
  Ni  Ni17  1  0.978  0.365  0.612  1.0
  Ni  Ni18  1  0.753  0.865  0.888  1.0
  Ni  Ni19  1  0.500  0.750  0.250  1.0
[/CIF]
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The compound described by Ho2Ni3Si5 crystallizes in the orthorhombic Ibam space group. Ho(1) is bonded in a 13-coordinate geometry to two equivalent Ni(2), five equivalent Ni(1), two equivalent Si(1), four equivalent Si(2), and four equivalent Si(3) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 10-coordinate geometry to five equivalent Ho(1), one Si(3), two equivalent Si(1), and two equivalent Si(2) atoms. In the second Ni site, Ni(2) is bonded to four equivalent Ho(1), two equivalent Ni(2), two equivalent Si(2), and four equivalent Si(3) atoms to form a mixture of distorted corner and face-sharing NiHo4Si6Ni2 cuboctahedra. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 8-coordinate geometry to four equivalent Ho(1) and four equivalent Ni(1) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Ho(1), one Ni(2), two equivalent Ni(1), and two equivalent Si(3) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to four equivalent Ho(1), one Ni(1), two equivalent Ni(2), and two equivalent Si(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ho2Si5Ni3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.850
_cell_length_b   7.850
_cell_length_c   7.850
_cell_angle_alpha   137.940
_cell_angle_beta   104.876
_cell_angle_gamma   90.048
_symmetry_Int_Tables_number   1
_cell_volume   299.188
_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  0.105  0.869  0.236  1.0
  Ho  Ho1  1  0.895  0.131  0.764  1.0
  Ho  Ho2  1  0.368  0.631  0.736  1.0
  Ho  Ho3  1  0.632  0.369  0.264  1.0
  Si  Si4  1  0.000  0.750  0.750  1.0
  Si  Si5  1  0.000  0.250  0.250  1.0
  Si  Si6  1  0.267  0.017  0.750  1.0
  Si  Si7  1  0.733  0.483  0.750  1.0
  Si  Si8  1  0.733  0.983  0.250  1.0
  Si  Si9  1  0.267  0.517  0.250  1.0
  Si  Si10  1  0.760  0.607  0.153  1.0
  Si  Si11  1  0.454  0.107  0.347  1.0
  Si  Si12  1  0.546  0.893  0.653  1.0
  Si  Si13  1  0.240  0.393  0.847  1.0
  Ni  Ni14  1  0.247  0.135  0.112  1.0
  Ni  Ni15  1  0.500  0.250  0.750  1.0
  Ni  Ni16  1  0.022  0.635  0.388  1.0
  Ni  Ni17  1  0.978  0.365  0.612  1.0
  Ni  Ni18  1  0.753  0.865  0.888  1.0
  Ni  Ni19  1  0.500  0.750  0.250  1.0
[/CIF]
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