The structure described by DySmFe17 crystallizes in the trigonal R3m space group. Dy(1) is bonded in a 19-coordinate geometry to one Fe(5), three equivalent Fe(1), three equivalent Fe(3), six equivalent Fe(2), and six equivalent Fe(4) atoms. Sm(1) is bonded in a 19-coordinate geometry to one Fe(6), three equivalent Fe(2), three equivalent Fe(3), six equivalent Fe(1), and six equivalent Fe(4) atoms. There are six inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one Dy(1), two equivalent Sm(1), one Fe(6), two equivalent Fe(2), two equivalent Fe(3), and four equivalent Fe(4) atoms to form FeSm2DyFe9 cuboctahedra that share corners with two equivalent Fe(1)Sm2DyFe9 cuboctahedra, corners with five equivalent Fe(3)SmDyFe10 cuboctahedra, corners with eight equivalent Fe(2)SmDy2Fe9 cuboctahedra,  an edgeedge with one Fe(2)SmDy2Fe9 cuboctahedra, edges with three equivalent Fe(3)SmDyFe10 cuboctahedra, edges with four equivalent Fe(1)Sm2DyFe9 cuboctahedra, faces with three equivalent Fe(2)SmDy2Fe9 cuboctahedra, faces with three equivalent Fe(3)SmDyFe10 cuboctahedra, and faces with four equivalent Fe(1)Sm2DyFe9 cuboctahedra. In the second Fe site, Fe(2) is bonded to two equivalent Dy(1), one Sm(1), one Fe(5), two equivalent Fe(1), two equivalent Fe(3), and four equivalent Fe(4) atoms to form FeSmDy2Fe9 cuboctahedra that share corners with two equivalent Fe(2)SmDy2Fe9 cuboctahedra, corners with five equivalent Fe(3)SmDyFe10 cuboctahedra, corners with eight equivalent Fe(1)Sm2DyFe9 cuboctahedra,  an edgeedge with one Fe(1)Sm2DyFe9 cuboctahedra, edges with three equivalent Fe(3)SmDyFe10 cuboctahedra, edges with four equivalent Fe(2)SmDy2Fe9 cuboctahedra, faces with three equivalent Fe(1)Sm2DyFe9 cuboctahedra, faces with three equivalent Fe(3)SmDyFe10 cuboctahedra, and faces with four equivalent Fe(2)SmDy2Fe9 cuboctahedra. In the third Fe site, Fe(3) is bonded to one Dy(1), one Sm(1), one Fe(5), one Fe(6), two equivalent Fe(1), two equivalent Fe(2), and four equivalent Fe(4) atoms to form FeSmDyFe10 cuboctahedra that share corners with four equivalent Fe(3)SmDyFe10 cuboctahedra, corners with five equivalent Fe(1)Sm2DyFe9 cuboctahedra, corners with five equivalent Fe(2)SmDy2Fe9 cuboctahedra, edges with three equivalent Fe(1)Sm2DyFe9 cuboctahedra, edges with three equivalent Fe(2)SmDy2Fe9 cuboctahedra, faces with three equivalent Fe(1)Sm2DyFe9 cuboctahedra, faces with three equivalent Fe(2)SmDy2Fe9 cuboctahedra, and faces with four equivalent Fe(3)SmDyFe10 cuboctahedra. In the fourth Fe site, Fe(4) is bonded in a 12-coordinate geometry to one Dy(1), one Sm(1), one Fe(5), one Fe(6), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(3), and two equivalent Fe(4) atoms. In the fifth Fe site, Fe(5) is bonded in a 14-coordinate geometry to one Dy(1), one Fe(6), three equivalent Fe(2), three equivalent Fe(3), and six equivalent Fe(4) atoms. In the sixth Fe site, Fe(6) is bonded in a 14-coordinate geometry to one Sm(1), one Fe(5), three equivalent Fe(1), three equivalent Fe(3), and six equivalent Fe(4) atoms. is represented by the CIF card [CIF]
data_SmDyFe17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.411
_cell_length_b   6.411
_cell_length_c   6.411
_cell_angle_alpha   83.061
_cell_angle_beta   83.061
_cell_angle_gamma   83.061
_symmetry_Int_Tables_number   1
_cell_volume   258.096
_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
  Sm  Sm0  1  0.658  0.658  0.658  1.0
  Dy  Dy1  1  0.342  0.342  0.342  1.0
  Fe  Fe2  1  0.656  0.656  0.155  1.0
  Fe  Fe3  1  0.656  0.155  0.656  1.0
  Fe  Fe4  1  0.155  0.656  0.656  1.0
  Fe  Fe5  1  0.343  0.343  0.845  1.0
  Fe  Fe6  1  0.343  0.845  0.343  1.0
  Fe  Fe7  1  0.845  0.343  0.343  1.0
  Fe  Fe8  1  0.000  0.000  0.500  1.0
  Fe  Fe9  1  0.000  0.500  0.000  1.0
  Fe  Fe10  1  0.500  0.000  0.000  1.0
  Fe  Fe11  1  0.707  0.292  0.001  1.0
  Fe  Fe12  1  0.292  0.001  0.707  1.0
  Fe  Fe13  1  0.001  0.707  0.292  1.0
  Fe  Fe14  1  0.707  0.001  0.292  1.0
  Fe  Fe15  1  0.001  0.292  0.707  1.0
  Fe  Fe16  1  0.292  0.707  0.001  1.0
  Fe  Fe17  1  0.097  0.097  0.097  1.0
  Fe  Fe18  1  0.904  0.904  0.904  1.0
[/CIF]
.
The structure described by DySmFe17 crystallizes in the trigonal R3m space group. Dy(1) is bonded in a 19-coordinate geometry to one Fe(5), three equivalent Fe(1), three equivalent Fe(3), six equivalent Fe(2), and six equivalent Fe(4) atoms. Sm(1) is bonded in a 19-coordinate geometry to one Fe(6), three equivalent Fe(2), three equivalent Fe(3), six equivalent Fe(1), and six equivalent Fe(4) atoms. There are six inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one Dy(1), two equivalent Sm(1), one Fe(6), two equivalent Fe(2), two equivalent Fe(3), and four equivalent Fe(4) atoms to form FeSm2DyFe9 cuboctahedra that share corners with two equivalent Fe(1)Sm2DyFe9 cuboctahedra, corners with five equivalent Fe(3)SmDyFe10 cuboctahedra, corners with eight equivalent Fe(2)SmDy2Fe9 cuboctahedra,  an edgeedge with one Fe(2)SmDy2Fe9 cuboctahedra, edges with three equivalent Fe(3)SmDyFe10 cuboctahedra, edges with four equivalent Fe(1)Sm2DyFe9 cuboctahedra, faces with three equivalent Fe(2)SmDy2Fe9 cuboctahedra, faces with three equivalent Fe(3)SmDyFe10 cuboctahedra, and faces with four equivalent Fe(1)Sm2DyFe9 cuboctahedra. In the second Fe site, Fe(2) is bonded to two equivalent Dy(1), one Sm(1), one Fe(5), two equivalent Fe(1), two equivalent Fe(3), and four equivalent Fe(4) atoms to form FeSmDy2Fe9 cuboctahedra that share corners with two equivalent Fe(2)SmDy2Fe9 cuboctahedra, corners with five equivalent Fe(3)SmDyFe10 cuboctahedra, corners with eight equivalent Fe(1)Sm2DyFe9 cuboctahedra,  an edgeedge with one Fe(1)Sm2DyFe9 cuboctahedra, edges with three equivalent Fe(3)SmDyFe10 cuboctahedra, edges with four equivalent Fe(2)SmDy2Fe9 cuboctahedra, faces with three equivalent Fe(1)Sm2DyFe9 cuboctahedra, faces with three equivalent Fe(3)SmDyFe10 cuboctahedra, and faces with four equivalent Fe(2)SmDy2Fe9 cuboctahedra. In the third Fe site, Fe(3) is bonded to one Dy(1), one Sm(1), one Fe(5), one Fe(6), two equivalent Fe(1), two equivalent Fe(2), and four equivalent Fe(4) atoms to form FeSmDyFe10 cuboctahedra that share corners with four equivalent Fe(3)SmDyFe10 cuboctahedra, corners with five equivalent Fe(1)Sm2DyFe9 cuboctahedra, corners with five equivalent Fe(2)SmDy2Fe9 cuboctahedra, edges with three equivalent Fe(1)Sm2DyFe9 cuboctahedra, edges with three equivalent Fe(2)SmDy2Fe9 cuboctahedra, faces with three equivalent Fe(1)Sm2DyFe9 cuboctahedra, faces with three equivalent Fe(2)SmDy2Fe9 cuboctahedra, and faces with four equivalent Fe(3)SmDyFe10 cuboctahedra. In the fourth Fe site, Fe(4) is bonded in a 12-coordinate geometry to one Dy(1), one Sm(1), one Fe(5), one Fe(6), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(3), and two equivalent Fe(4) atoms. In the fifth Fe site, Fe(5) is bonded in a 14-coordinate geometry to one Dy(1), one Fe(6), three equivalent Fe(2), three equivalent Fe(3), and six equivalent Fe(4) atoms. In the sixth Fe site, Fe(6) is bonded in a 14-coordinate geometry to one Sm(1), one Fe(5), three equivalent Fe(1), three equivalent Fe(3), and six equivalent Fe(4) atoms. is represented by the CIF card [CIF]
data_SmDyFe17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.411
_cell_length_b   6.411
_cell_length_c   6.411
_cell_angle_alpha   83.061
_cell_angle_beta   83.061
_cell_angle_gamma   83.061
_symmetry_Int_Tables_number   1
_cell_volume   258.096
_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
  Sm  Sm0  1  0.658  0.658  0.658  1.0
  Dy  Dy1  1  0.342  0.342  0.342  1.0
  Fe  Fe2  1  0.656  0.656  0.155  1.0
  Fe  Fe3  1  0.656  0.155  0.656  1.0
  Fe  Fe4  1  0.155  0.656  0.656  1.0
  Fe  Fe5  1  0.343  0.343  0.845  1.0
  Fe  Fe6  1  0.343  0.845  0.343  1.0
  Fe  Fe7  1  0.845  0.343  0.343  1.0
  Fe  Fe8  1  0.000  0.000  0.500  1.0
  Fe  Fe9  1  0.000  0.500  0.000  1.0
  Fe  Fe10  1  0.500  0.000  0.000  1.0
  Fe  Fe11  1  0.707  0.292  0.001  1.0
  Fe  Fe12  1  0.292  0.001  0.707  1.0
  Fe  Fe13  1  0.001  0.707  0.292  1.0
  Fe  Fe14  1  0.707  0.001  0.292  1.0
  Fe  Fe15  1  0.001  0.292  0.707  1.0
  Fe  Fe16  1  0.292  0.707  0.001  1.0
  Fe  Fe17  1  0.097  0.097  0.097  1.0
  Fe  Fe18  1  0.904  0.904  0.904  1.0
[/CIF]
.