The structure described by Dy5(Ir2Si5)2 crystallizes in the tetragonal P4/mbm space group. There are three inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 16-coordinate geometry to four equivalent Ir(1), four equivalent Si(2), and eight equivalent Si(3) atoms. In the second Dy site, Dy(2) is bonded to four equivalent Ir(1), two equivalent Si(1), two equivalent Si(3), and four equivalent Si(2) atoms to form face-sharing DySi8Ir4 cuboctahedra. In the third Dy site, Dy(3) is bonded in a 14-coordinate geometry to four equivalent Ir(1), two equivalent Si(3), four equivalent Si(1), and four equivalent Si(2) atoms. Ir(1) is bonded in a 10-coordinate geometry to one Dy(1), two equivalent Dy(2), two equivalent Dy(3), one Si(1), two equivalent Si(2), and two equivalent Si(3) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to two equivalent Dy(2), four equivalent Dy(3), two equivalent Ir(1), and one Si(1) atom. In the second Si site, Si(2) is bonded in a 8-coordinate geometry to one Dy(1), two equivalent Dy(2), two equivalent Dy(3), two equivalent Ir(1), and one Si(2) atom. In the third Si site, Si(3) is bonded in a 8-coordinate geometry to one Dy(2), one Dy(3), two equivalent Dy(1), two equivalent Ir(1), and two equivalent Si(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Dy5(Si5Ir2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.629
_cell_length_b   12.629
_cell_length_c   4.274
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   681.629
_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
  Dy  Dy0  1  0.500  0.500  0.000  1.0
  Dy  Dy1  1  0.000  0.000  0.000  1.0
  Dy  Dy2  1  0.676  0.176  0.500  1.0
  Dy  Dy3  1  0.324  0.824  0.500  1.0
  Dy  Dy4  1  0.176  0.324  0.500  1.0
  Dy  Dy5  1  0.824  0.676  0.500  1.0
  Dy  Dy6  1  0.884  0.384  0.500  1.0
  Dy  Dy7  1  0.116  0.616  0.500  1.0
  Dy  Dy8  1  0.384  0.116  0.500  1.0
  Dy  Dy9  1  0.616  0.884  0.500  1.0
  Si  Si10  1  0.566  0.066  0.000  1.0
  Si  Si11  1  0.434  0.934  0.000  1.0
  Si  Si12  1  0.066  0.434  0.000  1.0
  Si  Si13  1  0.934  0.566  0.000  1.0
  Si  Si14  1  0.663  0.701  0.000  1.0
  Si  Si15  1  0.337  0.299  0.000  1.0
  Si  Si16  1  0.163  0.799  0.000  1.0
  Si  Si17  1  0.837  0.201  0.000  1.0
  Si  Si18  1  0.299  0.663  0.000  1.0
  Si  Si19  1  0.701  0.337  0.000  1.0
  Si  Si20  1  0.201  0.163  0.000  1.0
  Si  Si21  1  0.799  0.837  0.000  1.0
  Si  Si22  1  0.657  0.503  0.500  1.0
  Si  Si23  1  0.343  0.497  0.500  1.0
  Si  Si24  1  0.157  0.997  0.500  1.0
  Si  Si25  1  0.843  0.003  0.500  1.0
  Si  Si26  1  0.497  0.657  0.500  1.0
  Si  Si27  1  0.503  0.343  0.500  1.0
  Si  Si28  1  0.003  0.157  0.500  1.0
  Si  Si29  1  0.997  0.843  0.500  1.0
  Ir  Ir30  1  0.745  0.520  0.000  1.0
  Ir  Ir31  1  0.255  0.480  0.000  1.0
  Ir  Ir32  1  0.245  0.980  0.000  1.0
  Ir  Ir33  1  0.755  0.020  0.000  1.0
  Ir  Ir34  1  0.480  0.745  0.000  1.0
  Ir  Ir35  1  0.520  0.255  0.000  1.0
  Ir  Ir36  1  0.020  0.245  0.000  1.0
  Ir  Ir37  1  0.980  0.755  0.000  1.0
[/CIF]
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The structure described by Dy5(Ir2Si5)2 crystallizes in the tetragonal P4/mbm space group. There are three inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 16-coordinate geometry to four equivalent Ir(1), four equivalent Si(2), and eight equivalent Si(3) atoms. In the second Dy site, Dy(2) is bonded to four equivalent Ir(1), two equivalent Si(1), two equivalent Si(3), and four equivalent Si(2) atoms to form face-sharing DySi8Ir4 cuboctahedra. In the third Dy site, Dy(3) is bonded in a 14-coordinate geometry to four equivalent Ir(1), two equivalent Si(3), four equivalent Si(1), and four equivalent Si(2) atoms. Ir(1) is bonded in a 10-coordinate geometry to one Dy(1), two equivalent Dy(2), two equivalent Dy(3), one Si(1), two equivalent Si(2), and two equivalent Si(3) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to two equivalent Dy(2), four equivalent Dy(3), two equivalent Ir(1), and one Si(1) atom. In the second Si site, Si(2) is bonded in a 8-coordinate geometry to one Dy(1), two equivalent Dy(2), two equivalent Dy(3), two equivalent Ir(1), and one Si(2) atom. In the third Si site, Si(3) is bonded in a 8-coordinate geometry to one Dy(2), one Dy(3), two equivalent Dy(1), two equivalent Ir(1), and two equivalent Si(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Dy5(Si5Ir2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.629
_cell_length_b   12.629
_cell_length_c   4.274
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   681.629
_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
  Dy  Dy0  1  0.500  0.500  0.000  1.0
  Dy  Dy1  1  0.000  0.000  0.000  1.0
  Dy  Dy2  1  0.676  0.176  0.500  1.0
  Dy  Dy3  1  0.324  0.824  0.500  1.0
  Dy  Dy4  1  0.176  0.324  0.500  1.0
  Dy  Dy5  1  0.824  0.676  0.500  1.0
  Dy  Dy6  1  0.884  0.384  0.500  1.0
  Dy  Dy7  1  0.116  0.616  0.500  1.0
  Dy  Dy8  1  0.384  0.116  0.500  1.0
  Dy  Dy9  1  0.616  0.884  0.500  1.0
  Si  Si10  1  0.566  0.066  0.000  1.0
  Si  Si11  1  0.434  0.934  0.000  1.0
  Si  Si12  1  0.066  0.434  0.000  1.0
  Si  Si13  1  0.934  0.566  0.000  1.0
  Si  Si14  1  0.663  0.701  0.000  1.0
  Si  Si15  1  0.337  0.299  0.000  1.0
  Si  Si16  1  0.163  0.799  0.000  1.0
  Si  Si17  1  0.837  0.201  0.000  1.0
  Si  Si18  1  0.299  0.663  0.000  1.0
  Si  Si19  1  0.701  0.337  0.000  1.0
  Si  Si20  1  0.201  0.163  0.000  1.0
  Si  Si21  1  0.799  0.837  0.000  1.0
  Si  Si22  1  0.657  0.503  0.500  1.0
  Si  Si23  1  0.343  0.497  0.500  1.0
  Si  Si24  1  0.157  0.997  0.500  1.0
  Si  Si25  1  0.843  0.003  0.500  1.0
  Si  Si26  1  0.497  0.657  0.500  1.0
  Si  Si27  1  0.503  0.343  0.500  1.0
  Si  Si28  1  0.003  0.157  0.500  1.0
  Si  Si29  1  0.997  0.843  0.500  1.0
  Ir  Ir30  1  0.745  0.520  0.000  1.0
  Ir  Ir31  1  0.255  0.480  0.000  1.0
  Ir  Ir32  1  0.245  0.980  0.000  1.0
  Ir  Ir33  1  0.755  0.020  0.000  1.0
  Ir  Ir34  1  0.480  0.745  0.000  1.0
  Ir  Ir35  1  0.520  0.255  0.000  1.0
  Ir  Ir36  1  0.020  0.245  0.000  1.0
  Ir  Ir37  1  0.980  0.755  0.000  1.0
[/CIF]
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