The material described by Sm2Ni3Si5 crystallizes in the orthorhombic Ibam space group. Sm(1) is bonded in a 17-coordinate geometry to two equivalent Ni(1), five 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 in a 12-coordinate geometry to four equivalent Sm(1), two equivalent Ni(1), two equivalent Si(2), and four equivalent Si(3) atoms. In the second Ni site, Ni(2) is bonded in a 10-coordinate geometry to five equivalent Sm(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 Sm(1) and four equivalent Ni(2) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Sm(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 Sm(1), one Ni(2), two equivalent Ni(1), and two equivalent Si(2) atoms. is represented by the CIF file [CIF]
data_Sm2Si5Ni3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.947
_cell_length_b   7.947
_cell_length_c   7.947
_cell_angle_alpha   137.913
_cell_angle_beta   105.528
_cell_angle_gamma   89.436
_symmetry_Int_Tables_number   1
_cell_volume   309.898
_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
  Sm  Sm0  1  0.868  0.631  0.237  1.0
  Sm  Sm1  1  0.132  0.369  0.763  1.0
  Sm  Sm2  1  0.394  0.131  0.263  1.0
  Sm  Sm3  1  0.606  0.869  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  0.235  0.985  0.750  1.0
  Si  Si7  1  0.765  0.515  0.750  1.0
  Si  Si8  1  0.765  0.015  0.250  1.0
  Si  Si9  1  0.235  0.485  0.250  1.0
  Si  Si10  1  0.042  0.892  0.150  1.0
  Si  Si11  1  0.958  0.108  0.850  1.0
  Si  Si12  1  0.743  0.392  0.350  1.0
  Si  Si13  1  0.257  0.608  0.650  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  0.256  0.867  0.389  1.0
  Ni  Ni17  1  0.744  0.133  0.611  1.0
  Ni  Ni18  1  0.478  0.367  0.111  1.0
  Ni  Ni19  1  0.522  0.633  0.889  1.0
[/CIF]
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The material described by Sm2Ni3Si5 crystallizes in the orthorhombic Ibam space group. Sm(1) is bonded in a 17-coordinate geometry to two equivalent Ni(1), five 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 in a 12-coordinate geometry to four equivalent Sm(1), two equivalent Ni(1), two equivalent Si(2), and four equivalent Si(3) atoms. In the second Ni site, Ni(2) is bonded in a 10-coordinate geometry to five equivalent Sm(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 Sm(1) and four equivalent Ni(2) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Sm(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 Sm(1), one Ni(2), two equivalent Ni(1), and two equivalent Si(2) atoms. is represented by the CIF file [CIF]
data_Sm2Si5Ni3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.947
_cell_length_b   7.947
_cell_length_c   7.947
_cell_angle_alpha   137.913
_cell_angle_beta   105.528
_cell_angle_gamma   89.436
_symmetry_Int_Tables_number   1
_cell_volume   309.898
_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
  Sm  Sm0  1  0.868  0.631  0.237  1.0
  Sm  Sm1  1  0.132  0.369  0.763  1.0
  Sm  Sm2  1  0.394  0.131  0.263  1.0
  Sm  Sm3  1  0.606  0.869  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  0.235  0.985  0.750  1.0
  Si  Si7  1  0.765  0.515  0.750  1.0
  Si  Si8  1  0.765  0.015  0.250  1.0
  Si  Si9  1  0.235  0.485  0.250  1.0
  Si  Si10  1  0.042  0.892  0.150  1.0
  Si  Si11  1  0.958  0.108  0.850  1.0
  Si  Si12  1  0.743  0.392  0.350  1.0
  Si  Si13  1  0.257  0.608  0.650  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  0.256  0.867  0.389  1.0
  Ni  Ni17  1  0.744  0.133  0.611  1.0
  Ni  Ni18  1  0.478  0.367  0.111  1.0
  Ni  Ni19  1  0.522  0.633  0.889  1.0
[/CIF]
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