The compound described by Dy3NiSi2 crystallizes in the orthorhombic Pnma space group. There are three inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 8-coordinate geometry to three equivalent Ni(1), two equivalent Si(2), and three equivalent Si(1) atoms. In the second Dy site, Dy(2) is bonded in a 6-coordinate geometry to one Ni(1), two equivalent Si(1), and three equivalent Si(2) atoms. In the third Dy site, Dy(3) is bonded in a 6-coordinate geometry to two equivalent Ni(1), two equivalent Si(1), and three equivalent Si(2) atoms. Ni(1) is bonded in a 9-coordinate geometry to one Dy(2), two equivalent Dy(3), three equivalent Dy(1), one Si(2), and two equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to two equivalent Dy(2), two equivalent Dy(3), three equivalent Dy(1), and two equivalent Ni(1) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Dy(1), three equivalent Dy(2), three equivalent Dy(3), and one Ni(1) atom. is represented by the CIF card [CIF]
data_Dy3Si2Ni
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.101
_cell_length_b   11.244
_cell_length_c   11.257
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   519.103
_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
  Dy  Dy0  1  0.250  0.058  0.882  1.0
  Dy  Dy1  1  0.250  0.442  0.382  1.0
  Dy  Dy2  1  0.750  0.942  0.118  1.0
  Dy  Dy3  1  0.750  0.558  0.618  1.0
  Dy  Dy4  1  0.250  0.125  0.560  1.0
  Dy  Dy5  1  0.250  0.375  0.060  1.0
  Dy  Dy6  1  0.750  0.875  0.440  1.0
  Dy  Dy7  1  0.750  0.625  0.940  1.0
  Dy  Dy8  1  0.250  0.803  0.715  1.0
  Dy  Dy9  1  0.250  0.697  0.215  1.0
  Dy  Dy10  1  0.750  0.197  0.285  1.0
  Dy  Dy11  1  0.750  0.303  0.785  1.0
  Si  Si12  1  0.250  0.814  0.975  1.0
  Si  Si13  1  0.250  0.686  0.475  1.0
  Si  Si14  1  0.750  0.186  0.025  1.0
  Si  Si15  1  0.750  0.314  0.525  1.0
  Si  Si16  1  0.250  0.493  0.802  1.0
  Si  Si17  1  0.250  0.007  0.302  1.0
  Si  Si18  1  0.750  0.507  0.198  1.0
  Si  Si19  1  0.750  0.993  0.698  1.0
  Ni  Ni20  1  0.250  0.365  0.629  1.0
  Ni  Ni21  1  0.250  0.135  0.129  1.0
  Ni  Ni22  1  0.750  0.635  0.371  1.0
  Ni  Ni23  1  0.750  0.865  0.871  1.0
[/CIF]
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The compound described by Dy3NiSi2 crystallizes in the orthorhombic Pnma space group. There are three inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 8-coordinate geometry to three equivalent Ni(1), two equivalent Si(2), and three equivalent Si(1) atoms. In the second Dy site, Dy(2) is bonded in a 6-coordinate geometry to one Ni(1), two equivalent Si(1), and three equivalent Si(2) atoms. In the third Dy site, Dy(3) is bonded in a 6-coordinate geometry to two equivalent Ni(1), two equivalent Si(1), and three equivalent Si(2) atoms. Ni(1) is bonded in a 9-coordinate geometry to one Dy(2), two equivalent Dy(3), three equivalent Dy(1), one Si(2), and two equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to two equivalent Dy(2), two equivalent Dy(3), three equivalent Dy(1), and two equivalent Ni(1) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Dy(1), three equivalent Dy(2), three equivalent Dy(3), and one Ni(1) atom. is represented by the CIF card [CIF]
data_Dy3Si2Ni
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.101
_cell_length_b   11.244
_cell_length_c   11.257
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   519.103
_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
  Dy  Dy0  1  0.250  0.058  0.882  1.0
  Dy  Dy1  1  0.250  0.442  0.382  1.0
  Dy  Dy2  1  0.750  0.942  0.118  1.0
  Dy  Dy3  1  0.750  0.558  0.618  1.0
  Dy  Dy4  1  0.250  0.125  0.560  1.0
  Dy  Dy5  1  0.250  0.375  0.060  1.0
  Dy  Dy6  1  0.750  0.875  0.440  1.0
  Dy  Dy7  1  0.750  0.625  0.940  1.0
  Dy  Dy8  1  0.250  0.803  0.715  1.0
  Dy  Dy9  1  0.250  0.697  0.215  1.0
  Dy  Dy10  1  0.750  0.197  0.285  1.0
  Dy  Dy11  1  0.750  0.303  0.785  1.0
  Si  Si12  1  0.250  0.814  0.975  1.0
  Si  Si13  1  0.250  0.686  0.475  1.0
  Si  Si14  1  0.750  0.186  0.025  1.0
  Si  Si15  1  0.750  0.314  0.525  1.0
  Si  Si16  1  0.250  0.493  0.802  1.0
  Si  Si17  1  0.250  0.007  0.302  1.0
  Si  Si18  1  0.750  0.507  0.198  1.0
  Si  Si19  1  0.750  0.993  0.698  1.0
  Ni  Ni20  1  0.250  0.365  0.629  1.0
  Ni  Ni21  1  0.250  0.135  0.129  1.0
  Ni  Ni22  1  0.750  0.635  0.371  1.0
  Ni  Ni23  1  0.750  0.865  0.871  1.0
[/CIF]
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