The material described by Al3Dy crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded to six equivalent Al(1) and six equivalent Al(2) atoms to form DyAl12 cuboctahedra that share corners with six equivalent Dy(1)Al12 cuboctahedra, corners with twelve equivalent Al(2)Dy4Al8 cuboctahedra, edges with six equivalent Al(2)Dy4Al8 cuboctahedra, faces with two equivalent Dy(1)Al12 cuboctahedra, faces with six equivalent Dy(2)Al12 cuboctahedra, and faces with six equivalent Al(2)Dy4Al8 cuboctahedra. In the second Dy site, Dy(2) is bonded to six equivalent Al(1) and six equivalent Al(2) atoms to form DyAl12 cuboctahedra that share corners with twelve equivalent Dy(2)Al12 cuboctahedra, edges with twelve equivalent Al(2)Dy4Al8 cuboctahedra, faces with six equivalent Dy(1)Al12 cuboctahedra, and faces with six equivalent Al(2)Dy4Al8 cuboctahedra. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a 10-coordinate geometry to two equivalent Dy(1), two equivalent Dy(2), two equivalent Al(1), and four equivalent Al(2) atoms. In the second Al site, Al(2) is bonded to two equivalent Dy(1), two equivalent Dy(2), four equivalent Al(1), and four equivalent Al(2) atoms to form distorted AlDy4Al8 cuboctahedra that share corners with four equivalent Dy(1)Al12 cuboctahedra, corners with fourteen equivalent Al(2)Dy4Al8 cuboctahedra, edges with two equivalent Dy(1)Al12 cuboctahedra, edges with four equivalent Dy(2)Al12 cuboctahedra, edges with four equivalent Al(2)Dy4Al8 cuboctahedra, faces with two equivalent Dy(1)Al12 cuboctahedra, faces with two equivalent Dy(2)Al12 cuboctahedra, and faces with six equivalent Al(2)Dy4Al8 cuboctahedra. is represented by the CIF card [CIF]
data_DyAl3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.082
_cell_length_b   6.082
_cell_length_c   9.513
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   304.708
_cell_formula_units_Z   4
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  0.000  0.000  0.500  1.0
  Dy  Dy1  1  0.667  0.333  0.750  1.0
  Dy  Dy2  1  0.333  0.667  0.250  1.0
  Dy  Dy3  1  0.000  0.000  0.000  1.0
  Al  Al4  1  0.183  0.817  0.750  1.0
  Al  Al5  1  0.633  0.817  0.750  1.0
  Al  Al6  1  0.000  0.500  0.000  1.0
  Al  Al7  1  0.500  0.500  0.000  1.0
  Al  Al8  1  0.817  0.633  0.250  1.0
  Al  Al9  1  0.367  0.183  0.250  1.0
  Al  Al10  1  0.183  0.367  0.750  1.0
  Al  Al11  1  0.500  0.500  0.500  1.0
  Al  Al12  1  0.500  0.000  0.500  1.0
  Al  Al13  1  0.817  0.183  0.250  1.0
  Al  Al14  1  0.500  0.000  0.000  1.0
  Al  Al15  1  0.000  0.500  0.500  1.0
[/CIF]
.
The material described by Al3Dy crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded to six equivalent Al(1) and six equivalent Al(2) atoms to form DyAl12 cuboctahedra that share corners with six equivalent Dy(1)Al12 cuboctahedra, corners with twelve equivalent Al(2)Dy4Al8 cuboctahedra, edges with six equivalent Al(2)Dy4Al8 cuboctahedra, faces with two equivalent Dy(1)Al12 cuboctahedra, faces with six equivalent Dy(2)Al12 cuboctahedra, and faces with six equivalent Al(2)Dy4Al8 cuboctahedra. In the second Dy site, Dy(2) is bonded to six equivalent Al(1) and six equivalent Al(2) atoms to form DyAl12 cuboctahedra that share corners with twelve equivalent Dy(2)Al12 cuboctahedra, edges with twelve equivalent Al(2)Dy4Al8 cuboctahedra, faces with six equivalent Dy(1)Al12 cuboctahedra, and faces with six equivalent Al(2)Dy4Al8 cuboctahedra. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a 10-coordinate geometry to two equivalent Dy(1), two equivalent Dy(2), two equivalent Al(1), and four equivalent Al(2) atoms. In the second Al site, Al(2) is bonded to two equivalent Dy(1), two equivalent Dy(2), four equivalent Al(1), and four equivalent Al(2) atoms to form distorted AlDy4Al8 cuboctahedra that share corners with four equivalent Dy(1)Al12 cuboctahedra, corners with fourteen equivalent Al(2)Dy4Al8 cuboctahedra, edges with two equivalent Dy(1)Al12 cuboctahedra, edges with four equivalent Dy(2)Al12 cuboctahedra, edges with four equivalent Al(2)Dy4Al8 cuboctahedra, faces with two equivalent Dy(1)Al12 cuboctahedra, faces with two equivalent Dy(2)Al12 cuboctahedra, and faces with six equivalent Al(2)Dy4Al8 cuboctahedra. is represented by the CIF card [CIF]
data_DyAl3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.082
_cell_length_b   6.082
_cell_length_c   9.513
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   304.708
_cell_formula_units_Z   4
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  0.000  0.000  0.500  1.0
  Dy  Dy1  1  0.667  0.333  0.750  1.0
  Dy  Dy2  1  0.333  0.667  0.250  1.0
  Dy  Dy3  1  0.000  0.000  0.000  1.0
  Al  Al4  1  0.183  0.817  0.750  1.0
  Al  Al5  1  0.633  0.817  0.750  1.0
  Al  Al6  1  0.000  0.500  0.000  1.0
  Al  Al7  1  0.500  0.500  0.000  1.0
  Al  Al8  1  0.817  0.633  0.250  1.0
  Al  Al9  1  0.367  0.183  0.250  1.0
  Al  Al10  1  0.183  0.367  0.750  1.0
  Al  Al11  1  0.500  0.500  0.500  1.0
  Al  Al12  1  0.500  0.000  0.500  1.0
  Al  Al13  1  0.817  0.183  0.250  1.0
  Al  Al14  1  0.500  0.000  0.000  1.0
  Al  Al15  1  0.000  0.500  0.500  1.0
[/CIF]
.