The structure described by Sc3Ni2Si3 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 11-coordinate geometry to four equivalent Ni(1), two equivalent Si(1), and five equivalent Si(2) atoms. In the second Sc site, Sc(2) is bonded in a 9-coordinate geometry to four equivalent Ni(1), two equivalent Si(2), and three equivalent Si(1) atoms. Ni(1) is bonded in a 10-coordinate geometry to two equivalent Sc(2), four equivalent Sc(1), one Si(1), and three equivalent Si(2) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to three equivalent Sc(2), four equivalent Sc(1), and two equivalent Ni(1) atoms. In the second Si site, Si(2) is bonded in a 10-coordinate geometry to one Sc(2), five equivalent Sc(1), three equivalent Ni(1), and one Si(2) atom. is represented by the CIF file [CIF]
data_Sc3Si3Ni2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.966
_cell_length_b   5.214
_cell_length_c   13.092
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   112.357
_symmetry_Int_Tables_number   1
_cell_volume   250.388
_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
  Sc  Sc0  1  0.084  0.168  0.889  1.0
  Sc  Sc1  1  0.916  0.832  0.111  1.0
  Sc  Sc2  1  0.916  0.832  0.389  1.0
  Sc  Sc3  1  0.362  0.724  0.750  1.0
  Sc  Sc4  1  0.084  0.168  0.611  1.0
  Sc  Sc5  1  0.638  0.276  0.250  1.0
  Si  Si6  1  0.339  0.678  0.250  1.0
  Si  Si7  1  0.661  0.322  0.750  1.0
  Si  Si8  1  0.383  0.766  0.539  1.0
  Si  Si9  1  0.617  0.234  0.461  1.0
  Si  Si10  1  0.617  0.234  0.039  1.0
  Si  Si11  1  0.383  0.766  0.961  1.0
  Ni  Ni12  1  0.208  0.416  0.404  1.0
  Ni  Ni13  1  0.792  0.584  0.596  1.0
  Ni  Ni14  1  0.208  0.416  0.096  1.0
  Ni  Ni15  1  0.792  0.584  0.904  1.0
[/CIF]
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The structure described by Sc3Ni2Si3 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 11-coordinate geometry to four equivalent Ni(1), two equivalent Si(1), and five equivalent Si(2) atoms. In the second Sc site, Sc(2) is bonded in a 9-coordinate geometry to four equivalent Ni(1), two equivalent Si(2), and three equivalent Si(1) atoms. Ni(1) is bonded in a 10-coordinate geometry to two equivalent Sc(2), four equivalent Sc(1), one Si(1), and three equivalent Si(2) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to three equivalent Sc(2), four equivalent Sc(1), and two equivalent Ni(1) atoms. In the second Si site, Si(2) is bonded in a 10-coordinate geometry to one Sc(2), five equivalent Sc(1), three equivalent Ni(1), and one Si(2) atom. is represented by the CIF file [CIF]
data_Sc3Si3Ni2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.966
_cell_length_b   5.214
_cell_length_c   13.092
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   112.357
_symmetry_Int_Tables_number   1
_cell_volume   250.388
_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
  Sc  Sc0  1  0.084  0.168  0.889  1.0
  Sc  Sc1  1  0.916  0.832  0.111  1.0
  Sc  Sc2  1  0.916  0.832  0.389  1.0
  Sc  Sc3  1  0.362  0.724  0.750  1.0
  Sc  Sc4  1  0.084  0.168  0.611  1.0
  Sc  Sc5  1  0.638  0.276  0.250  1.0
  Si  Si6  1  0.339  0.678  0.250  1.0
  Si  Si7  1  0.661  0.322  0.750  1.0
  Si  Si8  1  0.383  0.766  0.539  1.0
  Si  Si9  1  0.617  0.234  0.461  1.0
  Si  Si10  1  0.617  0.234  0.039  1.0
  Si  Si11  1  0.383  0.766  0.961  1.0
  Ni  Ni12  1  0.208  0.416  0.404  1.0
  Ni  Ni13  1  0.792  0.584  0.596  1.0
  Ni  Ni14  1  0.208  0.416  0.096  1.0
  Ni  Ni15  1  0.792  0.584  0.904  1.0
[/CIF]
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