The compound described by Dy12Al7Si crystallizes in the tetragonal I4/mcm space group. There are three inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 4-coordinate geometry to two equivalent Al(1) and four equivalent Al(3) atoms. In the second Dy site, Dy(2) is bonded in a 6-coordinate geometry to one Al(1), one Al(2), three equivalent Al(3), and one Si(1) atom. In the third Dy site, Dy(3) is bonded in a 5-coordinate geometry to two equivalent Al(3) and three equivalent Al(1) atoms. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded in a 9-coordinate geometry to two equivalent Dy(1), three equivalent Dy(3), and four equivalent Dy(2) atoms. In the second Al site, Al(2) is bonded in a body-centered cubic geometry to eight equivalent Dy(2) atoms. In the third Al site, Al(3) is bonded in a 10-coordinate geometry to one Dy(3), two equivalent Dy(1), six equivalent Dy(2), and one Al(3) atom. Si(1) is bonded in a 8-coordinate geometry to eight equivalent Dy(2) atoms. is represented by the CIF file [CIF]
data_Dy12Al7Si
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.237
_cell_length_b   11.237
_cell_length_c   11.237
_cell_angle_alpha   117.454
_cell_angle_beta   117.454
_cell_angle_gamma   94.469
_symmetry_Int_Tables_number   1
_cell_volume   1038.460
_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  0.148  0.648  0.500  1.0
  Dy  Dy1  1  0.852  0.352  0.500  1.0
  Dy  Dy2  1  0.648  0.148  0.500  1.0
  Dy  Dy3  1  0.352  0.852  0.500  1.0
  Dy  Dy4  1  0.837  0.701  0.265  1.0
  Dy  Dy5  1  0.163  0.299  0.735  1.0
  Dy  Dy6  1  0.436  0.572  0.735  1.0
  Dy  Dy7  1  0.701  0.436  0.864  1.0
  Dy  Dy8  1  0.064  0.799  0.136  1.0
  Dy  Dy9  1  0.564  0.428  0.265  1.0
  Dy  Dy10  1  0.299  0.564  0.136  1.0
  Dy  Dy11  1  0.936  0.201  0.864  1.0
  Dy  Dy12  1  0.572  0.837  0.136  1.0
  Dy  Dy13  1  0.663  0.928  0.864  1.0
  Dy  Dy14  1  0.428  0.163  0.864  1.0
  Dy  Dy15  1  0.337  0.072  0.136  1.0
  Dy  Dy16  1  0.928  0.064  0.265  1.0
  Dy  Dy17  1  0.072  0.936  0.735  1.0
  Dy  Dy18  1  0.799  0.663  0.735  1.0
  Dy  Dy19  1  0.201  0.337  0.265  1.0
  Dy  Dy20  1  0.170  0.670  0.840  1.0
  Dy  Dy21  1  0.830  0.330  0.160  1.0
  Dy  Dy22  1  0.670  0.830  0.500  1.0
  Dy  Dy23  1  0.330  0.170  0.500  1.0
  Al  Al24  1  0.618  0.118  0.735  1.0
  Al  Al25  1  0.382  0.882  0.265  1.0
  Al  Al26  1  0.118  0.382  0.500  1.0
  Al  Al27  1  0.882  0.618  0.500  1.0
  Al  Al28  1  0.500  0.500  0.000  1.0
  Al  Al29  1  0.000  0.000  0.000  1.0
  Al  Al30  1  0.382  0.882  0.857  1.0
  Al  Al31  1  0.618  0.118  0.143  1.0
  Al  Al32  1  0.025  0.525  0.143  1.0
  Al  Al33  1  0.882  0.025  0.500  1.0
  Al  Al34  1  0.475  0.618  0.500  1.0
  Al  Al35  1  0.975  0.475  0.857  1.0
  Al  Al36  1  0.118  0.975  0.500  1.0
  Al  Al37  1  0.525  0.382  0.500  1.0
  Si  Si38  1  0.750  0.750  0.000  1.0
  Si  Si39  1  0.250  0.250  0.000  1.0
[/CIF]
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The compound described by Dy12Al7Si crystallizes in the tetragonal I4/mcm space group. There are three inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 4-coordinate geometry to two equivalent Al(1) and four equivalent Al(3) atoms. In the second Dy site, Dy(2) is bonded in a 6-coordinate geometry to one Al(1), one Al(2), three equivalent Al(3), and one Si(1) atom. In the third Dy site, Dy(3) is bonded in a 5-coordinate geometry to two equivalent Al(3) and three equivalent Al(1) atoms. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded in a 9-coordinate geometry to two equivalent Dy(1), three equivalent Dy(3), and four equivalent Dy(2) atoms. In the second Al site, Al(2) is bonded in a body-centered cubic geometry to eight equivalent Dy(2) atoms. In the third Al site, Al(3) is bonded in a 10-coordinate geometry to one Dy(3), two equivalent Dy(1), six equivalent Dy(2), and one Al(3) atom. Si(1) is bonded in a 8-coordinate geometry to eight equivalent Dy(2) atoms. is represented by the CIF file [CIF]
data_Dy12Al7Si
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.237
_cell_length_b   11.237
_cell_length_c   11.237
_cell_angle_alpha   117.454
_cell_angle_beta   117.454
_cell_angle_gamma   94.469
_symmetry_Int_Tables_number   1
_cell_volume   1038.460
_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  0.148  0.648  0.500  1.0
  Dy  Dy1  1  0.852  0.352  0.500  1.0
  Dy  Dy2  1  0.648  0.148  0.500  1.0
  Dy  Dy3  1  0.352  0.852  0.500  1.0
  Dy  Dy4  1  0.837  0.701  0.265  1.0
  Dy  Dy5  1  0.163  0.299  0.735  1.0
  Dy  Dy6  1  0.436  0.572  0.735  1.0
  Dy  Dy7  1  0.701  0.436  0.864  1.0
  Dy  Dy8  1  0.064  0.799  0.136  1.0
  Dy  Dy9  1  0.564  0.428  0.265  1.0
  Dy  Dy10  1  0.299  0.564  0.136  1.0
  Dy  Dy11  1  0.936  0.201  0.864  1.0
  Dy  Dy12  1  0.572  0.837  0.136  1.0
  Dy  Dy13  1  0.663  0.928  0.864  1.0
  Dy  Dy14  1  0.428  0.163  0.864  1.0
  Dy  Dy15  1  0.337  0.072  0.136  1.0
  Dy  Dy16  1  0.928  0.064  0.265  1.0
  Dy  Dy17  1  0.072  0.936  0.735  1.0
  Dy  Dy18  1  0.799  0.663  0.735  1.0
  Dy  Dy19  1  0.201  0.337  0.265  1.0
  Dy  Dy20  1  0.170  0.670  0.840  1.0
  Dy  Dy21  1  0.830  0.330  0.160  1.0
  Dy  Dy22  1  0.670  0.830  0.500  1.0
  Dy  Dy23  1  0.330  0.170  0.500  1.0
  Al  Al24  1  0.618  0.118  0.735  1.0
  Al  Al25  1  0.382  0.882  0.265  1.0
  Al  Al26  1  0.118  0.382  0.500  1.0
  Al  Al27  1  0.882  0.618  0.500  1.0
  Al  Al28  1  0.500  0.500  0.000  1.0
  Al  Al29  1  0.000  0.000  0.000  1.0
  Al  Al30  1  0.382  0.882  0.857  1.0
  Al  Al31  1  0.618  0.118  0.143  1.0
  Al  Al32  1  0.025  0.525  0.143  1.0
  Al  Al33  1  0.882  0.025  0.500  1.0
  Al  Al34  1  0.475  0.618  0.500  1.0
  Al  Al35  1  0.975  0.475  0.857  1.0
  Al  Al36  1  0.118  0.975  0.500  1.0
  Al  Al37  1  0.525  0.382  0.500  1.0
  Si  Si38  1  0.750  0.750  0.000  1.0
  Si  Si39  1  0.250  0.250  0.000  1.0
[/CIF]
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