The crystal structure described by Dy2Co17 crystallizes in the trigonal R-3m space group. Dy(1) is bonded in a 19-coordinate geometry to one Co(4), three equivalent Co(1), six equivalent Co(2), and nine equivalent Co(3) atoms. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent Dy(1), two equivalent Co(4), four equivalent Co(2), and four equivalent Co(3) atoms to form CoDy2Co10 cuboctahedra that share corners with four equivalent Co(1)Dy2Co10 cuboctahedra, corners with eight equivalent Co(2)Dy2Co10 cuboctahedra, corners with ten equivalent Co(3)Dy3Co9 cuboctahedra, edges with four equivalent Co(2)Dy2Co10 cuboctahedra, edges with six equivalent Co(3)Dy3Co9 cuboctahedra, faces with four equivalent Co(1)Dy2Co10 cuboctahedra, faces with six equivalent Co(3)Dy3Co9 cuboctahedra, and faces with eight equivalent Co(2)Dy2Co10 cuboctahedra. In the second Co site, Co(2) is bonded to two equivalent Dy(1), two equivalent Co(1), two equivalent Co(2), two equivalent Co(4), and four equivalent Co(3) atoms to form distorted CoDy2Co10 cuboctahedra that share corners with four equivalent Co(1)Dy2Co10 cuboctahedra, corners with eight equivalent Co(3)Dy3Co9 cuboctahedra, corners with twelve equivalent Co(2)Dy2Co10 cuboctahedra,  an edgeedge with one Co(2)Dy2Co10 cuboctahedra, edges with two equivalent Co(1)Dy2Co10 cuboctahedra, edges with two equivalent Co(3)Dy3Co9 cuboctahedra, faces with four equivalent Co(1)Dy2Co10 cuboctahedra, faces with seven equivalent Co(2)Dy2Co10 cuboctahedra, and faces with ten equivalent Co(3)Dy3Co9 cuboctahedra. In the third Co site, Co(3) is bonded to three equivalent Dy(1), one Co(4), two equivalent Co(1), two equivalent Co(3), and four equivalent Co(2) atoms to form CoDy3Co9 cuboctahedra that share corners with five equivalent Co(1)Dy2Co10 cuboctahedra, corners with eight equivalent Co(2)Dy2Co10 cuboctahedra, corners with ten equivalent Co(3)Dy3Co9 cuboctahedra, edges with two equivalent Co(2)Dy2Co10 cuboctahedra, edges with three equivalent Co(1)Dy2Co10 cuboctahedra, edges with five equivalent Co(3)Dy3Co9 cuboctahedra, faces with three equivalent Co(1)Dy2Co10 cuboctahedra, faces with seven equivalent Co(3)Dy3Co9 cuboctahedra, and faces with ten equivalent Co(2)Dy2Co10 cuboctahedra. In the fourth Co site, Co(4) is bonded in a 14-coordinate geometry to one Dy(1), one Co(4), three equivalent Co(1), three equivalent Co(3), and six equivalent Co(2) atoms. is represented by the CIF card [CIF]
data_Dy2Co17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.273
_cell_length_b   6.273
_cell_length_c   6.273
_cell_angle_alpha   82.885
_cell_angle_beta   82.885
_cell_angle_gamma   82.885
_symmetry_Int_Tables_number   1
_cell_volume   241.601
_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  0.656  0.656  0.656  1.0
  Dy  Dy1  1  0.344  0.344  0.344  1.0
  Co  Co2  1  0.000  0.000  0.500  1.0
  Co  Co3  1  0.000  0.500  0.000  1.0
  Co  Co4  1  0.500  0.000  0.000  1.0
  Co  Co5  1  0.288  0.712  0.000  1.0
  Co  Co6  1  0.712  0.000  0.288  1.0
  Co  Co7  1  0.000  0.288  0.712  1.0
  Co  Co8  1  0.288  0.000  0.712  1.0
  Co  Co9  1  0.000  0.712  0.288  1.0
  Co  Co10  1  0.712  0.288  0.000  1.0
  Co  Co11  1  0.346  0.346  0.850  1.0
  Co  Co12  1  0.346  0.850  0.346  1.0
  Co  Co13  1  0.850  0.346  0.346  1.0
  Co  Co14  1  0.654  0.654  0.150  1.0
  Co  Co15  1  0.654  0.150  0.654  1.0
  Co  Co16  1  0.150  0.654  0.654  1.0
  Co  Co17  1  0.903  0.903  0.903  1.0
  Co  Co18  1  0.097  0.097  0.097  1.0
[/CIF]
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The crystal structure described by Dy2Co17 crystallizes in the trigonal R-3m space group. Dy(1) is bonded in a 19-coordinate geometry to one Co(4), three equivalent Co(1), six equivalent Co(2), and nine equivalent Co(3) atoms. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent Dy(1), two equivalent Co(4), four equivalent Co(2), and four equivalent Co(3) atoms to form CoDy2Co10 cuboctahedra that share corners with four equivalent Co(1)Dy2Co10 cuboctahedra, corners with eight equivalent Co(2)Dy2Co10 cuboctahedra, corners with ten equivalent Co(3)Dy3Co9 cuboctahedra, edges with four equivalent Co(2)Dy2Co10 cuboctahedra, edges with six equivalent Co(3)Dy3Co9 cuboctahedra, faces with four equivalent Co(1)Dy2Co10 cuboctahedra, faces with six equivalent Co(3)Dy3Co9 cuboctahedra, and faces with eight equivalent Co(2)Dy2Co10 cuboctahedra. In the second Co site, Co(2) is bonded to two equivalent Dy(1), two equivalent Co(1), two equivalent Co(2), two equivalent Co(4), and four equivalent Co(3) atoms to form distorted CoDy2Co10 cuboctahedra that share corners with four equivalent Co(1)Dy2Co10 cuboctahedra, corners with eight equivalent Co(3)Dy3Co9 cuboctahedra, corners with twelve equivalent Co(2)Dy2Co10 cuboctahedra,  an edgeedge with one Co(2)Dy2Co10 cuboctahedra, edges with two equivalent Co(1)Dy2Co10 cuboctahedra, edges with two equivalent Co(3)Dy3Co9 cuboctahedra, faces with four equivalent Co(1)Dy2Co10 cuboctahedra, faces with seven equivalent Co(2)Dy2Co10 cuboctahedra, and faces with ten equivalent Co(3)Dy3Co9 cuboctahedra. In the third Co site, Co(3) is bonded to three equivalent Dy(1), one Co(4), two equivalent Co(1), two equivalent Co(3), and four equivalent Co(2) atoms to form CoDy3Co9 cuboctahedra that share corners with five equivalent Co(1)Dy2Co10 cuboctahedra, corners with eight equivalent Co(2)Dy2Co10 cuboctahedra, corners with ten equivalent Co(3)Dy3Co9 cuboctahedra, edges with two equivalent Co(2)Dy2Co10 cuboctahedra, edges with three equivalent Co(1)Dy2Co10 cuboctahedra, edges with five equivalent Co(3)Dy3Co9 cuboctahedra, faces with three equivalent Co(1)Dy2Co10 cuboctahedra, faces with seven equivalent Co(3)Dy3Co9 cuboctahedra, and faces with ten equivalent Co(2)Dy2Co10 cuboctahedra. In the fourth Co site, Co(4) is bonded in a 14-coordinate geometry to one Dy(1), one Co(4), three equivalent Co(1), three equivalent Co(3), and six equivalent Co(2) atoms. is represented by the CIF card [CIF]
data_Dy2Co17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.273
_cell_length_b   6.273
_cell_length_c   6.273
_cell_angle_alpha   82.885
_cell_angle_beta   82.885
_cell_angle_gamma   82.885
_symmetry_Int_Tables_number   1
_cell_volume   241.601
_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  0.656  0.656  0.656  1.0
  Dy  Dy1  1  0.344  0.344  0.344  1.0
  Co  Co2  1  0.000  0.000  0.500  1.0
  Co  Co3  1  0.000  0.500  0.000  1.0
  Co  Co4  1  0.500  0.000  0.000  1.0
  Co  Co5  1  0.288  0.712  0.000  1.0
  Co  Co6  1  0.712  0.000  0.288  1.0
  Co  Co7  1  0.000  0.288  0.712  1.0
  Co  Co8  1  0.288  0.000  0.712  1.0
  Co  Co9  1  0.000  0.712  0.288  1.0
  Co  Co10  1  0.712  0.288  0.000  1.0
  Co  Co11  1  0.346  0.346  0.850  1.0
  Co  Co12  1  0.346  0.850  0.346  1.0
  Co  Co13  1  0.850  0.346  0.346  1.0
  Co  Co14  1  0.654  0.654  0.150  1.0
  Co  Co15  1  0.654  0.150  0.654  1.0
  Co  Co16  1  0.150  0.654  0.654  1.0
  Co  Co17  1  0.903  0.903  0.903  1.0
  Co  Co18  1  0.097  0.097  0.097  1.0
[/CIF]
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