The compound described by Er2Ni3Si5 crystallizes in the orthorhombic Ibam space group. Er(1) is bonded in a 16-coordinate geometry to two equivalent Ni(1), four equivalent Ni(2), 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 to four equivalent Er(1), two equivalent Ni(1), two equivalent Si(2), and four equivalent Si(3) atoms to form a mixture of distorted corner and face-sharing NiEr4Si6Ni2 cuboctahedra. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to four equivalent Er(1), one Si(3), two equivalent Si(1), and two equivalent Si(2) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 8-coordinate geometry to four equivalent Er(1) and four equivalent Ni(2) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Er(1), one Ni(1), two equivalent Ni(2), and two equivalent Si(3) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to four equivalent Er(1), one Ni(2), two equivalent Ni(1), and two equivalent Si(2) atoms. is represented by the CIF card [CIF]
data_Er2Si5Ni3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.844
_cell_length_b   7.844
_cell_length_c   7.844
_cell_angle_alpha   138.071
_cell_angle_beta   104.328
_cell_angle_gamma   90.490
_symmetry_Int_Tables_number   1
_cell_volume   298.286
_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
  Er  Er0  1  0.868  0.630  0.237  1.0
  Er  Er1  1  0.132  0.370  0.763  1.0
  Er  Er2  1  0.393  0.130  0.263  1.0
  Er  Er3  1  0.607  0.870  0.737  1.0
  Si  Si4  1  0.500  0.750  0.250  1.0
  Si  Si5  1  0.500  0.250  0.750  1.0
  Si  Si6  1  0.236  0.986  0.750  1.0
  Si  Si7  1  0.764  0.514  0.750  1.0
  Si  Si8  1  0.764  0.014  0.250  1.0
  Si  Si9  1  0.236  0.486  0.250  1.0
  Si  Si10  1  0.042  0.891  0.151  1.0
  Si  Si11  1  0.958  0.109  0.849  1.0
  Si  Si12  1  0.741  0.391  0.349  1.0
  Si  Si13  1  0.259  0.609  0.651  1.0
  Ni  Ni14  1  0.000  0.750  0.750  1.0
  Ni  Ni15  1  0.000  0.250  0.250  1.0
  Ni  Ni16  1  0.251  0.866  0.384  1.0
  Ni  Ni17  1  0.749  0.134  0.616  1.0
  Ni  Ni18  1  0.482  0.366  0.116  1.0
  Ni  Ni19  1  0.518  0.634  0.884  1.0
[/CIF]
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The compound described by Er2Ni3Si5 crystallizes in the orthorhombic Ibam space group. Er(1) is bonded in a 16-coordinate geometry to two equivalent Ni(1), four equivalent Ni(2), 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 to four equivalent Er(1), two equivalent Ni(1), two equivalent Si(2), and four equivalent Si(3) atoms to form a mixture of distorted corner and face-sharing NiEr4Si6Ni2 cuboctahedra. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to four equivalent Er(1), one Si(3), two equivalent Si(1), and two equivalent Si(2) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 8-coordinate geometry to four equivalent Er(1) and four equivalent Ni(2) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Er(1), one Ni(1), two equivalent Ni(2), and two equivalent Si(3) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to four equivalent Er(1), one Ni(2), two equivalent Ni(1), and two equivalent Si(2) atoms. is represented by the CIF card [CIF]
data_Er2Si5Ni3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.844
_cell_length_b   7.844
_cell_length_c   7.844
_cell_angle_alpha   138.071
_cell_angle_beta   104.328
_cell_angle_gamma   90.490
_symmetry_Int_Tables_number   1
_cell_volume   298.286
_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
  Er  Er0  1  0.868  0.630  0.237  1.0
  Er  Er1  1  0.132  0.370  0.763  1.0
  Er  Er2  1  0.393  0.130  0.263  1.0
  Er  Er3  1  0.607  0.870  0.737  1.0
  Si  Si4  1  0.500  0.750  0.250  1.0
  Si  Si5  1  0.500  0.250  0.750  1.0
  Si  Si6  1  0.236  0.986  0.750  1.0
  Si  Si7  1  0.764  0.514  0.750  1.0
  Si  Si8  1  0.764  0.014  0.250  1.0
  Si  Si9  1  0.236  0.486  0.250  1.0
  Si  Si10  1  0.042  0.891  0.151  1.0
  Si  Si11  1  0.958  0.109  0.849  1.0
  Si  Si12  1  0.741  0.391  0.349  1.0
  Si  Si13  1  0.259  0.609  0.651  1.0
  Ni  Ni14  1  0.000  0.750  0.750  1.0
  Ni  Ni15  1  0.000  0.250  0.250  1.0
  Ni  Ni16  1  0.251  0.866  0.384  1.0
  Ni  Ni17  1  0.749  0.134  0.616  1.0
  Ni  Ni18  1  0.482  0.366  0.116  1.0
  Ni  Ni19  1  0.518  0.634  0.884  1.0
[/CIF]
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