The compound described by Dy10Si17 crystallizes in the orthorhombic Imm2 space group. There are three inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 11-coordinate geometry to one Si(10), one Si(3), one Si(7), two equivalent Si(5), two equivalent Si(6), two equivalent Si(8), and two equivalent Si(9) atoms. In the second Dy site, Dy(2) is bonded in a 10-coordinate geometry to one Si(5), one Si(6), one Si(8), one Si(9), two equivalent Si(1), two equivalent Si(2), and two equivalent Si(4) atoms. In the third Dy site, Dy(3) is bonded in a 10-coordinate geometry to one Si(1), one Si(10), one Si(2), one Si(3), one Si(4), one Si(5), one Si(6), one Si(7), one Si(8), and one Si(9) atom. There are ten inequivalent Si sites. In the first Si site, Si(9) is bonded in a 9-coordinate geometry to two equivalent Dy(1), two equivalent Dy(2), two equivalent Dy(3), one Si(1), one Si(10), and one Si(6) atom. In the second Si site, Si(10) is bonded in a 8-coordinate geometry to two equivalent Dy(1), four equivalent Dy(3), and two equivalent Si(9) atoms. In the third Si site, Si(1) is bonded in a 8-coordinate geometry to two equivalent Dy(3), four equivalent Dy(2), one Si(4), and one Si(9) atom. In the fourth Si site, Si(2) is bonded in a 8-coordinate geometry to two equivalent Dy(3), four equivalent Dy(2), one Si(4), and one Si(5) atom. In the fifth Si site, Si(3) is bonded in a 9-coordinate geometry to two equivalent Dy(1), four equivalent Dy(3), one Si(7), and two equivalent Si(8) atoms. In the sixth Si site, Si(4) is bonded in a 9-coordinate geometry to two equivalent Dy(3), four equivalent Dy(2), one Si(1), one Si(2), and one Si(6) atom. In the seventh Si site, Si(5) is bonded in a 9-coordinate geometry to two equivalent Dy(1), two equivalent Dy(2), two equivalent Dy(3), one Si(2), one Si(7), and one Si(8) atom. In the eighth Si site, Si(6) is bonded in a 8-coordinate geometry to two equivalent Dy(1), two equivalent Dy(2), two equivalent Dy(3), one Si(4), and one Si(9) atom. In the ninth Si site, Si(7) is bonded in a 9-coordinate geometry to two equivalent Dy(1), four equivalent Dy(3), one Si(3), and two equivalent Si(5) atoms. In the tenth Si site, Si(8) is bonded in a 8-coordinate geometry to two equivalent Dy(1), two equivalent Dy(2), two equivalent Dy(3), one Si(3), and one Si(5) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Dy10Si17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.688
_cell_length_b   8.246
_cell_length_c   10.987
_cell_angle_alpha   112.041
_cell_angle_beta   107.718
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   530.506
_cell_formula_units_Z   1
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  0.761  0.755  1.000  1.0
  Dy  Dy1  1  0.963  0.451  0.400  1.0
  Dy  Dy2  1  0.367  0.848  0.201  1.0
  Dy  Dy3  1  0.963  0.948  0.400  1.0
  Dy  Dy4  1  0.167  0.152  0.799  1.0
  Dy  Dy5  1  0.367  0.352  0.201  1.0
  Dy  Dy6  1  0.761  0.245  1.000  1.0
  Dy  Dy7  1  0.563  0.549  0.600  1.0
  Dy  Dy8  1  0.563  0.052  0.600  1.0
  Dy  Dy9  1  0.167  0.648  0.799  1.0
  Si  Si10  1  0.667  0.713  0.426  1.0
  Si  Si11  1  0.582  0.199  0.398  1.0
  Si  Si12  1  0.083  0.000  0.000  1.0
  Si  Si13  1  0.296  0.700  0.399  1.0
  Si  Si14  1  0.184  0.801  0.602  1.0
  Si  Si15  1  0.504  0.896  0.792  1.0
  Si  Si16  1  0.868  0.416  0.831  1.0
  Si  Si17  1  0.712  0.104  0.208  1.0
  Si  Si18  1  0.897  0.300  0.601  1.0
  Si  Si19  1  0.037  0.585  0.169  1.0
  Si  Si20  1  0.432  1.000  1.000  1.0
  Si  Si21  1  0.842  0.882  0.763  1.0
  Si  Si22  1  0.501  0.400  0.799  1.0
  Si  Si23  1  0.079  0.118  0.237  1.0
  Si  Si24  1  0.240  0.287  0.574  1.0
  Si  Si25  1  0.395  0.500  0.000  1.0
  Si  Si26  1  0.701  0.600  0.201  1.0
[/CIF]
.
The compound described by Dy10Si17 crystallizes in the orthorhombic Imm2 space group. There are three inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 11-coordinate geometry to one Si(10), one Si(3), one Si(7), two equivalent Si(5), two equivalent Si(6), two equivalent Si(8), and two equivalent Si(9) atoms. In the second Dy site, Dy(2) is bonded in a 10-coordinate geometry to one Si(5), one Si(6), one Si(8), one Si(9), two equivalent Si(1), two equivalent Si(2), and two equivalent Si(4) atoms. In the third Dy site, Dy(3) is bonded in a 10-coordinate geometry to one Si(1), one Si(10), one Si(2), one Si(3), one Si(4), one Si(5), one Si(6), one Si(7), one Si(8), and one Si(9) atom. There are ten inequivalent Si sites. In the first Si site, Si(9) is bonded in a 9-coordinate geometry to two equivalent Dy(1), two equivalent Dy(2), two equivalent Dy(3), one Si(1), one Si(10), and one Si(6) atom. In the second Si site, Si(10) is bonded in a 8-coordinate geometry to two equivalent Dy(1), four equivalent Dy(3), and two equivalent Si(9) atoms. In the third Si site, Si(1) is bonded in a 8-coordinate geometry to two equivalent Dy(3), four equivalent Dy(2), one Si(4), and one Si(9) atom. In the fourth Si site, Si(2) is bonded in a 8-coordinate geometry to two equivalent Dy(3), four equivalent Dy(2), one Si(4), and one Si(5) atom. In the fifth Si site, Si(3) is bonded in a 9-coordinate geometry to two equivalent Dy(1), four equivalent Dy(3), one Si(7), and two equivalent Si(8) atoms. In the sixth Si site, Si(4) is bonded in a 9-coordinate geometry to two equivalent Dy(3), four equivalent Dy(2), one Si(1), one Si(2), and one Si(6) atom. In the seventh Si site, Si(5) is bonded in a 9-coordinate geometry to two equivalent Dy(1), two equivalent Dy(2), two equivalent Dy(3), one Si(2), one Si(7), and one Si(8) atom. In the eighth Si site, Si(6) is bonded in a 8-coordinate geometry to two equivalent Dy(1), two equivalent Dy(2), two equivalent Dy(3), one Si(4), and one Si(9) atom. In the ninth Si site, Si(7) is bonded in a 9-coordinate geometry to two equivalent Dy(1), four equivalent Dy(3), one Si(3), and two equivalent Si(5) atoms. In the tenth Si site, Si(8) is bonded in a 8-coordinate geometry to two equivalent Dy(1), two equivalent Dy(2), two equivalent Dy(3), one Si(3), and one Si(5) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Dy10Si17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.688
_cell_length_b   8.246
_cell_length_c   10.987
_cell_angle_alpha   112.041
_cell_angle_beta   107.718
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   530.506
_cell_formula_units_Z   1
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  0.761  0.755  1.000  1.0
  Dy  Dy1  1  0.963  0.451  0.400  1.0
  Dy  Dy2  1  0.367  0.848  0.201  1.0
  Dy  Dy3  1  0.963  0.948  0.400  1.0
  Dy  Dy4  1  0.167  0.152  0.799  1.0
  Dy  Dy5  1  0.367  0.352  0.201  1.0
  Dy  Dy6  1  0.761  0.245  1.000  1.0
  Dy  Dy7  1  0.563  0.549  0.600  1.0
  Dy  Dy8  1  0.563  0.052  0.600  1.0
  Dy  Dy9  1  0.167  0.648  0.799  1.0
  Si  Si10  1  0.667  0.713  0.426  1.0
  Si  Si11  1  0.582  0.199  0.398  1.0
  Si  Si12  1  0.083  0.000  0.000  1.0
  Si  Si13  1  0.296  0.700  0.399  1.0
  Si  Si14  1  0.184  0.801  0.602  1.0
  Si  Si15  1  0.504  0.896  0.792  1.0
  Si  Si16  1  0.868  0.416  0.831  1.0
  Si  Si17  1  0.712  0.104  0.208  1.0
  Si  Si18  1  0.897  0.300  0.601  1.0
  Si  Si19  1  0.037  0.585  0.169  1.0
  Si  Si20  1  0.432  1.000  1.000  1.0
  Si  Si21  1  0.842  0.882  0.763  1.0
  Si  Si22  1  0.501  0.400  0.799  1.0
  Si  Si23  1  0.079  0.118  0.237  1.0
  Si  Si24  1  0.240  0.287  0.574  1.0
  Si  Si25  1  0.395  0.500  0.000  1.0
  Si  Si26  1  0.701  0.600  0.201  1.0
[/CIF]
.