The material structure described by GdNi8Si3 crystallizes in the monoclinic C2/c space group. Gd(1) is bonded in a 22-coordinate geometry to two equivalent Ni(4), two equivalent Ni(5), four equivalent Ni(1), four equivalent Ni(2), four equivalent Ni(3), two equivalent Si(2), and four equivalent Si(1) atoms. There are five inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 12-coordinate geometry to two equivalent Gd(1), one Ni(1), one Ni(3), one Ni(4), one Ni(5), three equivalent Ni(2), one Si(2), and two equivalent Si(1) atoms. In the second Ni site, Ni(2) is bonded in a 12-coordinate geometry to two equivalent Gd(1), one Ni(2), one Ni(4), two equivalent Ni(3), three equivalent Ni(1), one Si(1), and two equivalent Si(2) atoms. In the third Ni site, Ni(3) is bonded in a 12-coordinate geometry to two equivalent Gd(1), one Ni(1), one Ni(3), one Ni(4), one Ni(5), two equivalent Ni(2), one Si(2), and three equivalent Si(1) atoms. In the fourth Ni site, Ni(4) is bonded in a 14-coordinate geometry to two equivalent Gd(1), two equivalent Ni(1), two equivalent Ni(2), two equivalent Ni(3), two equivalent Ni(5), two equivalent Si(1), and two equivalent Si(2) atoms. In the fifth Ni site, Ni(5) is bonded in a 10-coordinate geometry to two equivalent Gd(1), two equivalent Ni(1), two equivalent Ni(3), two equivalent Ni(4), and four equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 12-coordinate geometry to two equivalent Gd(1), one Ni(2), one Ni(4), two equivalent Ni(1), two equivalent Ni(5), three equivalent Ni(3), and one Si(1) atom. In the second Si site, Si(2) is bonded in a 10-coordinate geometry to two equivalent Gd(1), two equivalent Ni(1), two equivalent Ni(3), two equivalent Ni(4), and four equivalent Ni(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_GdSi3Ni8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.473
_cell_length_b   7.473
_cell_length_c   7.429
_cell_angle_alpha   80.330
_cell_angle_beta   80.330
_cell_angle_gamma   130.473
_symmetry_Int_Tables_number   1
_cell_volume   289.097
_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
  Gd  Gd0  1  0.368  0.632  0.750  1.0
  Gd  Gd1  1  0.632  0.368  0.250  1.0
  Si  Si2  1  0.816  0.724  0.825  1.0
  Si  Si3  1  0.276  0.184  0.675  1.0
  Si  Si4  1  0.184  0.276  0.175  1.0
  Si  Si5  1  0.724  0.816  0.325  1.0
  Si  Si6  1  0.000  0.500  0.500  1.0
  Si  Si7  1  0.500  1.000  0.000  1.0
  Ni  Ni8  1  0.140  0.804  0.921  1.0
  Ni  Ni9  1  0.196  0.860  0.579  1.0
  Ni  Ni10  1  0.860  0.196  0.079  1.0
  Ni  Ni11  1  0.804  0.140  0.421  1.0
  Ni  Ni12  1  0.850  0.432  0.829  1.0
  Ni  Ni13  1  0.569  0.150  0.671  1.0
  Ni  Ni14  1  0.150  0.568  0.171  1.0
  Ni  Ni15  1  0.432  0.850  0.329  1.0
  Ni  Ni16  1  0.712  0.562  0.570  1.0
  Ni  Ni17  1  0.438  0.288  0.930  1.0
  Ni  Ni18  1  0.288  0.438  0.430  1.0
  Ni  Ni19  1  0.562  0.712  0.070  1.0
  Ni  Ni20  1  0.878  0.122  0.750  1.0
  Ni  Ni21  1  0.122  0.878  0.250  1.0
  Ni  Ni22  1  1.000  1.000  0.500  1.0
  Ni  Ni23  1  0.000  0.000  0.000  1.0
[/CIF]
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The material structure described by GdNi8Si3 crystallizes in the monoclinic C2/c space group. Gd(1) is bonded in a 22-coordinate geometry to two equivalent Ni(4), two equivalent Ni(5), four equivalent Ni(1), four equivalent Ni(2), four equivalent Ni(3), two equivalent Si(2), and four equivalent Si(1) atoms. There are five inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 12-coordinate geometry to two equivalent Gd(1), one Ni(1), one Ni(3), one Ni(4), one Ni(5), three equivalent Ni(2), one Si(2), and two equivalent Si(1) atoms. In the second Ni site, Ni(2) is bonded in a 12-coordinate geometry to two equivalent Gd(1), one Ni(2), one Ni(4), two equivalent Ni(3), three equivalent Ni(1), one Si(1), and two equivalent Si(2) atoms. In the third Ni site, Ni(3) is bonded in a 12-coordinate geometry to two equivalent Gd(1), one Ni(1), one Ni(3), one Ni(4), one Ni(5), two equivalent Ni(2), one Si(2), and three equivalent Si(1) atoms. In the fourth Ni site, Ni(4) is bonded in a 14-coordinate geometry to two equivalent Gd(1), two equivalent Ni(1), two equivalent Ni(2), two equivalent Ni(3), two equivalent Ni(5), two equivalent Si(1), and two equivalent Si(2) atoms. In the fifth Ni site, Ni(5) is bonded in a 10-coordinate geometry to two equivalent Gd(1), two equivalent Ni(1), two equivalent Ni(3), two equivalent Ni(4), and four equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 12-coordinate geometry to two equivalent Gd(1), one Ni(2), one Ni(4), two equivalent Ni(1), two equivalent Ni(5), three equivalent Ni(3), and one Si(1) atom. In the second Si site, Si(2) is bonded in a 10-coordinate geometry to two equivalent Gd(1), two equivalent Ni(1), two equivalent Ni(3), two equivalent Ni(4), and four equivalent Ni(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_GdSi3Ni8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.473
_cell_length_b   7.473
_cell_length_c   7.429
_cell_angle_alpha   80.330
_cell_angle_beta   80.330
_cell_angle_gamma   130.473
_symmetry_Int_Tables_number   1
_cell_volume   289.097
_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
  Gd  Gd0  1  0.368  0.632  0.750  1.0
  Gd  Gd1  1  0.632  0.368  0.250  1.0
  Si  Si2  1  0.816  0.724  0.825  1.0
  Si  Si3  1  0.276  0.184  0.675  1.0
  Si  Si4  1  0.184  0.276  0.175  1.0
  Si  Si5  1  0.724  0.816  0.325  1.0
  Si  Si6  1  0.000  0.500  0.500  1.0
  Si  Si7  1  0.500  1.000  0.000  1.0
  Ni  Ni8  1  0.140  0.804  0.921  1.0
  Ni  Ni9  1  0.196  0.860  0.579  1.0
  Ni  Ni10  1  0.860  0.196  0.079  1.0
  Ni  Ni11  1  0.804  0.140  0.421  1.0
  Ni  Ni12  1  0.850  0.432  0.829  1.0
  Ni  Ni13  1  0.569  0.150  0.671  1.0
  Ni  Ni14  1  0.150  0.568  0.171  1.0
  Ni  Ni15  1  0.432  0.850  0.329  1.0
  Ni  Ni16  1  0.712  0.562  0.570  1.0
  Ni  Ni17  1  0.438  0.288  0.930  1.0
  Ni  Ni18  1  0.288  0.438  0.430  1.0
  Ni  Ni19  1  0.562  0.712  0.070  1.0
  Ni  Ni20  1  0.878  0.122  0.750  1.0
  Ni  Ni21  1  0.122  0.878  0.250  1.0
  Ni  Ni22  1  1.000  1.000  0.500  1.0
  Ni  Ni23  1  0.000  0.000  0.000  1.0
[/CIF]
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