The crystal structure described by CeYCo17 crystallizes in the trigonal R3m space group. Ce(1) is bonded in a 19-coordinate geometry to one Co(5), three equivalent Co(2), three equivalent Co(4), six equivalent Co(1), and six equivalent Co(3) atoms. Y(1) is bonded in a 19-coordinate geometry to one Co(6), three equivalent Co(3), three equivalent Co(4), six equivalent Co(1), and six equivalent Co(2) atoms. There are six inequivalent Co sites. In the first Co site, Co(1) is bonded to one Ce(1), one Y(1), one Co(5), one Co(6), two equivalent Co(1), two equivalent Co(2), two equivalent Co(3), and two equivalent Co(4) atoms to form distorted CoCeYCo10 cuboctahedra that share corners with four equivalent Co(3)Ce2YCo9 cuboctahedra, corners with four equivalent Co(2)CeY2Co9 cuboctahedra, corners with four equivalent Co(4)CeYCo10 cuboctahedra, corners with twelve equivalent Co(1)CeYCo10 cuboctahedra,  an edgeedge with one Co(3)Ce2YCo9 cuboctahedra,  an edgeedge with one Co(2)CeY2Co9 cuboctahedra,  an edgeedge with one Co(1)CeYCo10 cuboctahedra, edges with two equivalent Co(4)CeYCo10 cuboctahedra, faces with four equivalent Co(4)CeYCo10 cuboctahedra, faces with five equivalent Co(3)Ce2YCo9 cuboctahedra, faces with five equivalent Co(2)CeY2Co9 cuboctahedra, and faces with seven equivalent Co(1)CeYCo10 cuboctahedra. In the second Co site, Co(2) is bonded to one Ce(1), two equivalent Y(1), one Co(6), two equivalent Co(3), two equivalent Co(4), and four equivalent Co(1) atoms to form CoCeY2Co9 cuboctahedra that share corners with two equivalent Co(2)CeY2Co9 cuboctahedra, corners with five equivalent Co(4)CeYCo10 cuboctahedra, corners with eight equivalent Co(3)Ce2YCo9 cuboctahedra, corners with eight equivalent Co(1)CeYCo10 cuboctahedra,  an edgeedge with one Co(3)Ce2YCo9 cuboctahedra, edges with two equivalent Co(1)CeYCo10 cuboctahedra, edges with three equivalent Co(4)CeYCo10 cuboctahedra, edges with four equivalent Co(2)CeY2Co9 cuboctahedra, faces with three equivalent Co(3)Ce2YCo9 cuboctahedra, faces with three equivalent Co(4)CeYCo10 cuboctahedra, faces with four equivalent Co(2)CeY2Co9 cuboctahedra, and faces with ten equivalent Co(1)CeYCo10 cuboctahedra. In the third Co site, Co(3) is bonded to two equivalent Ce(1), one Y(1), one Co(5), two equivalent Co(2), two equivalent Co(4), and four equivalent Co(1) atoms to form CoCe2YCo9 cuboctahedra that share corners with two equivalent Co(3)Ce2YCo9 cuboctahedra, corners with five equivalent Co(4)CeYCo10 cuboctahedra, corners with eight equivalent Co(2)CeY2Co9 cuboctahedra, corners with eight equivalent Co(1)CeYCo10 cuboctahedra,  an edgeedge with one Co(2)CeY2Co9 cuboctahedra, edges with two equivalent Co(1)CeYCo10 cuboctahedra, edges with three equivalent Co(4)CeYCo10 cuboctahedra, edges with four equivalent Co(3)Ce2YCo9 cuboctahedra, faces with three equivalent Co(2)CeY2Co9 cuboctahedra, faces with three equivalent Co(4)CeYCo10 cuboctahedra, faces with four equivalent Co(3)Ce2YCo9 cuboctahedra, and faces with ten equivalent Co(1)CeYCo10 cuboctahedra. In the fourth Co site, Co(4) is bonded to one Ce(1), one Y(1), one Co(5), one Co(6), two equivalent Co(2), two equivalent Co(3), and four equivalent Co(1) atoms to form distorted CoCeYCo10 cuboctahedra that share corners with four equivalent Co(4)CeYCo10 cuboctahedra, corners with five equivalent Co(3)Ce2YCo9 cuboctahedra, corners with five equivalent Co(2)CeY2Co9 cuboctahedra, corners with eight equivalent Co(1)CeYCo10 cuboctahedra, edges with three equivalent Co(3)Ce2YCo9 cuboctahedra, edges with three equivalent Co(2)CeY2Co9 cuboctahedra, edges with four equivalent Co(1)CeYCo10 cuboctahedra, faces with three equivalent Co(3)Ce2YCo9 cuboctahedra, faces with three equivalent Co(2)CeY2Co9 cuboctahedra, faces with four equivalent Co(4)CeYCo10 cuboctahedra, and faces with eight equivalent Co(1)CeYCo10 cuboctahedra. In the fifth Co site, Co(5) is bonded in a 14-coordinate geometry to one Ce(1), one Co(6), three equivalent Co(3), three equivalent Co(4), and six equivalent Co(1) atoms. In the sixth Co site, Co(6) is bonded in a 14-coordinate geometry to one Y(1), one Co(5), three equivalent Co(2), three equivalent Co(4), and six equivalent Co(1) atoms. is represented by the CIF file [CIF]
data_CeYCo17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.249
_cell_length_b   6.249
_cell_length_c   6.249
_cell_angle_alpha   82.733
_cell_angle_beta   82.733
_cell_angle_gamma   82.733
_symmetry_Int_Tables_number   1
_cell_volume   238.643
_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
  Ce  Ce0  1  0.653  0.653  0.653  1.0
  Y  Y1  1  0.344  0.344  0.344  1.0
  Co  Co2  1  0.715  0.289  0.999  1.0
  Co  Co3  1  0.999  0.715  0.289  1.0
  Co  Co4  1  0.289  0.999  0.715  1.0
  Co  Co5  1  0.999  0.289  0.715  1.0
  Co  Co6  1  0.715  0.999  0.289  1.0
  Co  Co7  1  0.289  0.715  0.999  1.0
  Co  Co8  1  0.346  0.346  0.846  1.0
  Co  Co9  1  0.846  0.346  0.346  1.0
  Co  Co10  1  0.346  0.846  0.346  1.0
  Co  Co11  1  0.656  0.656  0.143  1.0
  Co  Co12  1  0.143  0.656  0.656  1.0
  Co  Co13  1  0.656  0.143  0.656  1.0
  Co  Co14  1  0.005  0.005  0.498  1.0
  Co  Co15  1  0.498  0.005  0.005  1.0
  Co  Co16  1  0.005  0.498  0.005  1.0
  Co  Co17  1  0.905  0.905  0.905  1.0
  Co  Co18  1  0.095  0.095  0.095  1.0
[/CIF]
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The crystal structure described by CeYCo17 crystallizes in the trigonal R3m space group. Ce(1) is bonded in a 19-coordinate geometry to one Co(5), three equivalent Co(2), three equivalent Co(4), six equivalent Co(1), and six equivalent Co(3) atoms. Y(1) is bonded in a 19-coordinate geometry to one Co(6), three equivalent Co(3), three equivalent Co(4), six equivalent Co(1), and six equivalent Co(2) atoms. There are six inequivalent Co sites. In the first Co site, Co(1) is bonded to one Ce(1), one Y(1), one Co(5), one Co(6), two equivalent Co(1), two equivalent Co(2), two equivalent Co(3), and two equivalent Co(4) atoms to form distorted CoCeYCo10 cuboctahedra that share corners with four equivalent Co(3)Ce2YCo9 cuboctahedra, corners with four equivalent Co(2)CeY2Co9 cuboctahedra, corners with four equivalent Co(4)CeYCo10 cuboctahedra, corners with twelve equivalent Co(1)CeYCo10 cuboctahedra,  an edgeedge with one Co(3)Ce2YCo9 cuboctahedra,  an edgeedge with one Co(2)CeY2Co9 cuboctahedra,  an edgeedge with one Co(1)CeYCo10 cuboctahedra, edges with two equivalent Co(4)CeYCo10 cuboctahedra, faces with four equivalent Co(4)CeYCo10 cuboctahedra, faces with five equivalent Co(3)Ce2YCo9 cuboctahedra, faces with five equivalent Co(2)CeY2Co9 cuboctahedra, and faces with seven equivalent Co(1)CeYCo10 cuboctahedra. In the second Co site, Co(2) is bonded to one Ce(1), two equivalent Y(1), one Co(6), two equivalent Co(3), two equivalent Co(4), and four equivalent Co(1) atoms to form CoCeY2Co9 cuboctahedra that share corners with two equivalent Co(2)CeY2Co9 cuboctahedra, corners with five equivalent Co(4)CeYCo10 cuboctahedra, corners with eight equivalent Co(3)Ce2YCo9 cuboctahedra, corners with eight equivalent Co(1)CeYCo10 cuboctahedra,  an edgeedge with one Co(3)Ce2YCo9 cuboctahedra, edges with two equivalent Co(1)CeYCo10 cuboctahedra, edges with three equivalent Co(4)CeYCo10 cuboctahedra, edges with four equivalent Co(2)CeY2Co9 cuboctahedra, faces with three equivalent Co(3)Ce2YCo9 cuboctahedra, faces with three equivalent Co(4)CeYCo10 cuboctahedra, faces with four equivalent Co(2)CeY2Co9 cuboctahedra, and faces with ten equivalent Co(1)CeYCo10 cuboctahedra. In the third Co site, Co(3) is bonded to two equivalent Ce(1), one Y(1), one Co(5), two equivalent Co(2), two equivalent Co(4), and four equivalent Co(1) atoms to form CoCe2YCo9 cuboctahedra that share corners with two equivalent Co(3)Ce2YCo9 cuboctahedra, corners with five equivalent Co(4)CeYCo10 cuboctahedra, corners with eight equivalent Co(2)CeY2Co9 cuboctahedra, corners with eight equivalent Co(1)CeYCo10 cuboctahedra,  an edgeedge with one Co(2)CeY2Co9 cuboctahedra, edges with two equivalent Co(1)CeYCo10 cuboctahedra, edges with three equivalent Co(4)CeYCo10 cuboctahedra, edges with four equivalent Co(3)Ce2YCo9 cuboctahedra, faces with three equivalent Co(2)CeY2Co9 cuboctahedra, faces with three equivalent Co(4)CeYCo10 cuboctahedra, faces with four equivalent Co(3)Ce2YCo9 cuboctahedra, and faces with ten equivalent Co(1)CeYCo10 cuboctahedra. In the fourth Co site, Co(4) is bonded to one Ce(1), one Y(1), one Co(5), one Co(6), two equivalent Co(2), two equivalent Co(3), and four equivalent Co(1) atoms to form distorted CoCeYCo10 cuboctahedra that share corners with four equivalent Co(4)CeYCo10 cuboctahedra, corners with five equivalent Co(3)Ce2YCo9 cuboctahedra, corners with five equivalent Co(2)CeY2Co9 cuboctahedra, corners with eight equivalent Co(1)CeYCo10 cuboctahedra, edges with three equivalent Co(3)Ce2YCo9 cuboctahedra, edges with three equivalent Co(2)CeY2Co9 cuboctahedra, edges with four equivalent Co(1)CeYCo10 cuboctahedra, faces with three equivalent Co(3)Ce2YCo9 cuboctahedra, faces with three equivalent Co(2)CeY2Co9 cuboctahedra, faces with four equivalent Co(4)CeYCo10 cuboctahedra, and faces with eight equivalent Co(1)CeYCo10 cuboctahedra. In the fifth Co site, Co(5) is bonded in a 14-coordinate geometry to one Ce(1), one Co(6), three equivalent Co(3), three equivalent Co(4), and six equivalent Co(1) atoms. In the sixth Co site, Co(6) is bonded in a 14-coordinate geometry to one Y(1), one Co(5), three equivalent Co(2), three equivalent Co(4), and six equivalent Co(1) atoms. is represented by the CIF file [CIF]
data_CeYCo17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.249
_cell_length_b   6.249
_cell_length_c   6.249
_cell_angle_alpha   82.733
_cell_angle_beta   82.733
_cell_angle_gamma   82.733
_symmetry_Int_Tables_number   1
_cell_volume   238.643
_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
  Ce  Ce0  1  0.653  0.653  0.653  1.0
  Y  Y1  1  0.344  0.344  0.344  1.0
  Co  Co2  1  0.715  0.289  0.999  1.0
  Co  Co3  1  0.999  0.715  0.289  1.0
  Co  Co4  1  0.289  0.999  0.715  1.0
  Co  Co5  1  0.999  0.289  0.715  1.0
  Co  Co6  1  0.715  0.999  0.289  1.0
  Co  Co7  1  0.289  0.715  0.999  1.0
  Co  Co8  1  0.346  0.346  0.846  1.0
  Co  Co9  1  0.846  0.346  0.346  1.0
  Co  Co10  1  0.346  0.846  0.346  1.0
  Co  Co11  1  0.656  0.656  0.143  1.0
  Co  Co12  1  0.143  0.656  0.656  1.0
  Co  Co13  1  0.656  0.143  0.656  1.0
  Co  Co14  1  0.005  0.005  0.498  1.0
  Co  Co15  1  0.498  0.005  0.005  1.0
  Co  Co16  1  0.005  0.498  0.005  1.0
  Co  Co17  1  0.905  0.905  0.905  1.0
  Co  Co18  1  0.095  0.095  0.095  1.0
[/CIF]
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