The structure described by LuNi5Si3 crystallizes in the orthorhombic Pnma space group. Lu(1) is bonded in a 17-coordinate geometry to one Ni(3), one Ni(5), three equivalent Ni(1), three equivalent Ni(2), three equivalent Ni(4), 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 5-coordinate geometry to one Lu(1), one Ni(2), one Ni(3), two equivalent Ni(1), two equivalent Ni(4), one Si(1), two equivalent Si(2), and two equivalent Si(3) atoms. In the second Ni site, Ni(1) is bonded in a 12-coordinate geometry to three equivalent Lu(1), two equivalent Ni(5), three equivalent Ni(4), one Si(2), and three equivalent Si(1) atoms. In the third Ni site, Ni(2) is bonded to three equivalent Lu(1), one Ni(5), two equivalent Ni(2), two equivalent Ni(3), one Si(3), and three equivalent Si(2) atoms to form distorted face-sharing NiLu3Si4Ni5 cuboctahedra. In the fourth Ni site, Ni(3) is bonded in a 10-coordinate geometry to one Lu(1), one Ni(5), two equivalent Ni(2), two equivalent Ni(3), one Si(2), and three equivalent Si(3) atoms. In the fifth Ni site, Ni(4) is bonded in a 12-coordinate geometry to three equivalent Lu(1), two equivalent Ni(5), three equivalent Ni(1), one Si(3), and three equivalent Si(1) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to two equivalent Lu(1), one Ni(5), three equivalent Ni(1), and three equivalent Ni(4) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Lu(1), one Ni(1), one Ni(3), two equivalent Ni(5), and three equivalent Ni(2) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to two equivalent Lu(1), one Ni(2), one Ni(4), two equivalent Ni(5), and three equivalent Ni(3) atoms. is represented by the CIF card [CIF]
data_LuSi3Ni5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.729
_cell_length_b   18.491
_cell_length_c   6.659
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   459.147
_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
  Lu  Lu0  1  0.750  0.644  0.123  1.0
  Lu  Lu1  1  0.250  0.356  0.877  1.0
  Lu  Lu2  1  0.250  0.856  0.623  1.0
  Lu  Lu3  1  0.750  0.144  0.377  1.0
  Si  Si4  1  0.750  0.738  0.622  1.0
  Si  Si5  1  0.250  0.262  0.378  1.0
  Si  Si6  1  0.250  0.762  0.122  1.0
  Si  Si7  1  0.750  0.238  0.878  1.0
  Si  Si8  1  0.750  0.924  0.349  1.0
  Si  Si9  1  0.250  0.076  0.651  1.0
  Si  Si10  1  0.250  0.576  0.849  1.0
  Si  Si11  1  0.750  0.424  0.151  1.0
  Si  Si12  1  0.750  0.915  0.910  1.0
  Si  Si13  1  0.250  0.085  0.090  1.0
  Si  Si14  1  0.250  0.585  0.410  1.0
  Si  Si15  1  0.750  0.415  0.590  1.0
  Ni  Ni16  1  0.750  0.800  0.318  1.0
  Ni  Ni17  1  0.250  0.200  0.682  1.0
  Ni  Ni18  1  0.250  0.700  0.818  1.0
  Ni  Ni19  1  0.750  0.300  0.182  1.0
  Ni  Ni20  1  0.750  0.995  0.631  1.0
  Ni  Ni21  1  0.250  0.005  0.369  1.0
  Ni  Ni22  1  0.250  0.505  0.131  1.0
  Ni  Ni23  1  0.750  0.495  0.869  1.0
  Ni  Ni24  1  0.750  0.514  0.381  1.0
  Ni  Ni25  1  0.250  0.486  0.619  1.0
  Ni  Ni26  1  0.250  0.986  0.881  1.0
  Ni  Ni27  1  0.750  0.014  0.119  1.0
  Ni  Ni28  1  0.750  0.794  0.930  1.0
  Ni  Ni29  1  0.250  0.206  0.070  1.0
  Ni  Ni30  1  0.250  0.706  0.430  1.0
  Ni  Ni31  1  0.750  0.294  0.570  1.0
  Ni  Ni32  1  0.750  0.614  0.642  1.0
  Ni  Ni33  1  0.250  0.386  0.358  1.0
  Ni  Ni34  1  0.250  0.886  0.142  1.0
  Ni  Ni35  1  0.750  0.114  0.858  1.0
[/CIF]
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The structure described by LuNi5Si3 crystallizes in the orthorhombic Pnma space group. Lu(1) is bonded in a 17-coordinate geometry to one Ni(3), one Ni(5), three equivalent Ni(1), three equivalent Ni(2), three equivalent Ni(4), 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 5-coordinate geometry to one Lu(1), one Ni(2), one Ni(3), two equivalent Ni(1), two equivalent Ni(4), one Si(1), two equivalent Si(2), and two equivalent Si(3) atoms. In the second Ni site, Ni(1) is bonded in a 12-coordinate geometry to three equivalent Lu(1), two equivalent Ni(5), three equivalent Ni(4), one Si(2), and three equivalent Si(1) atoms. In the third Ni site, Ni(2) is bonded to three equivalent Lu(1), one Ni(5), two equivalent Ni(2), two equivalent Ni(3), one Si(3), and three equivalent Si(2) atoms to form distorted face-sharing NiLu3Si4Ni5 cuboctahedra. In the fourth Ni site, Ni(3) is bonded in a 10-coordinate geometry to one Lu(1), one Ni(5), two equivalent Ni(2), two equivalent Ni(3), one Si(2), and three equivalent Si(3) atoms. In the fifth Ni site, Ni(4) is bonded in a 12-coordinate geometry to three equivalent Lu(1), two equivalent Ni(5), three equivalent Ni(1), one Si(3), and three equivalent Si(1) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to two equivalent Lu(1), one Ni(5), three equivalent Ni(1), and three equivalent Ni(4) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Lu(1), one Ni(1), one Ni(3), two equivalent Ni(5), and three equivalent Ni(2) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to two equivalent Lu(1), one Ni(2), one Ni(4), two equivalent Ni(5), and three equivalent Ni(3) atoms. is represented by the CIF card [CIF]
data_LuSi3Ni5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.729
_cell_length_b   18.491
_cell_length_c   6.659
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   459.147
_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
  Lu  Lu0  1  0.750  0.644  0.123  1.0
  Lu  Lu1  1  0.250  0.356  0.877  1.0
  Lu  Lu2  1  0.250  0.856  0.623  1.0
  Lu  Lu3  1  0.750  0.144  0.377  1.0
  Si  Si4  1  0.750  0.738  0.622  1.0
  Si  Si5  1  0.250  0.262  0.378  1.0
  Si  Si6  1  0.250  0.762  0.122  1.0
  Si  Si7  1  0.750  0.238  0.878  1.0
  Si  Si8  1  0.750  0.924  0.349  1.0
  Si  Si9  1  0.250  0.076  0.651  1.0
  Si  Si10  1  0.250  0.576  0.849  1.0
  Si  Si11  1  0.750  0.424  0.151  1.0
  Si  Si12  1  0.750  0.915  0.910  1.0
  Si  Si13  1  0.250  0.085  0.090  1.0
  Si  Si14  1  0.250  0.585  0.410  1.0
  Si  Si15  1  0.750  0.415  0.590  1.0
  Ni  Ni16  1  0.750  0.800  0.318  1.0
  Ni  Ni17  1  0.250  0.200  0.682  1.0
  Ni  Ni18  1  0.250  0.700  0.818  1.0
  Ni  Ni19  1  0.750  0.300  0.182  1.0
  Ni  Ni20  1  0.750  0.995  0.631  1.0
  Ni  Ni21  1  0.250  0.005  0.369  1.0
  Ni  Ni22  1  0.250  0.505  0.131  1.0
  Ni  Ni23  1  0.750  0.495  0.869  1.0
  Ni  Ni24  1  0.750  0.514  0.381  1.0
  Ni  Ni25  1  0.250  0.486  0.619  1.0
  Ni  Ni26  1  0.250  0.986  0.881  1.0
  Ni  Ni27  1  0.750  0.014  0.119  1.0
  Ni  Ni28  1  0.750  0.794  0.930  1.0
  Ni  Ni29  1  0.250  0.206  0.070  1.0
  Ni  Ni30  1  0.250  0.706  0.430  1.0
  Ni  Ni31  1  0.750  0.294  0.570  1.0
  Ni  Ni32  1  0.750  0.614  0.642  1.0
  Ni  Ni33  1  0.250  0.386  0.358  1.0
  Ni  Ni34  1  0.250  0.886  0.142  1.0
  Ni  Ni35  1  0.750  0.114  0.858  1.0
[/CIF]
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