The structure described by Yb5Si3 crystallizes in the orthorhombic Cmcm space group. There are three inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 6-coordinate geometry to two equivalent Si(1) and four equivalent Si(2) atoms. In the second Yb site, Yb(2) is bonded in a 5-coordinate geometry to two equivalent Si(2) and three equivalent Si(1) atoms. In the third Yb site, Yb(3) is bonded in a 5-coordinate geometry to one Si(1) and four 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 two equivalent Yb(3), three equivalent Yb(2), and four equivalent Yb(1) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to one Yb(2), four equivalent Yb(1), and four equivalent Yb(3) atoms. is represented by the CIF card [CIF]
data_Yb5Si3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.469
_cell_length_b   8.809
_cell_length_c   8.805
_cell_angle_alpha   120.016
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   434.454
_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
  Yb  Yb0  1  0.500  0.333  0.667  1.0
  Yb  Yb1  1  0.500  0.667  0.333  1.0
  Yb  Yb2  1  0.000  0.667  0.333  1.0
  Yb  Yb3  1  0.000  0.333  0.667  1.0
  Yb  Yb4  1  0.750  0.273  0.000  1.0
  Yb  Yb5  1  0.750  0.726  0.726  1.0
  Yb  Yb6  1  0.750  0.999  0.274  1.0
  Yb  Yb7  1  0.250  0.727  0.000  1.0
  Yb  Yb8  1  0.250  0.274  0.274  1.0
  Yb  Yb9  1  0.250  0.001  0.726  1.0
  Si  Si10  1  0.750  0.612  0.000  1.0
  Si  Si11  1  0.750  0.387  0.387  1.0
  Si  Si12  1  0.750  1.000  0.613  1.0
  Si  Si13  1  0.250  0.388  0.000  1.0
  Si  Si14  1  0.250  0.613  0.613  1.0
  Si  Si15  1  0.250  0.000  0.387  1.0
[/CIF]
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The structure described by Yb5Si3 crystallizes in the orthorhombic Cmcm space group. There are three inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 6-coordinate geometry to two equivalent Si(1) and four equivalent Si(2) atoms. In the second Yb site, Yb(2) is bonded in a 5-coordinate geometry to two equivalent Si(2) and three equivalent Si(1) atoms. In the third Yb site, Yb(3) is bonded in a 5-coordinate geometry to one Si(1) and four 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 two equivalent Yb(3), three equivalent Yb(2), and four equivalent Yb(1) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to one Yb(2), four equivalent Yb(1), and four equivalent Yb(3) atoms. is represented by the CIF card [CIF]
data_Yb5Si3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.469
_cell_length_b   8.809
_cell_length_c   8.805
_cell_angle_alpha   120.016
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   434.454
_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
  Yb  Yb0  1  0.500  0.333  0.667  1.0
  Yb  Yb1  1  0.500  0.667  0.333  1.0
  Yb  Yb2  1  0.000  0.667  0.333  1.0
  Yb  Yb3  1  0.000  0.333  0.667  1.0
  Yb  Yb4  1  0.750  0.273  0.000  1.0
  Yb  Yb5  1  0.750  0.726  0.726  1.0
  Yb  Yb6  1  0.750  0.999  0.274  1.0
  Yb  Yb7  1  0.250  0.727  0.000  1.0
  Yb  Yb8  1  0.250  0.274  0.274  1.0
  Yb  Yb9  1  0.250  0.001  0.726  1.0
  Si  Si10  1  0.750  0.612  0.000  1.0
  Si  Si11  1  0.750  0.387  0.387  1.0
  Si  Si12  1  0.750  1.000  0.613  1.0
  Si  Si13  1  0.250  0.388  0.000  1.0
  Si  Si14  1  0.250  0.613  0.613  1.0
  Si  Si15  1  0.250  0.000  0.387  1.0
[/CIF]
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