The material structure described by Y8Co5 crystallizes in the monoclinic P2_1/c space group. There are eight inequivalent Y sites. In the first Y site, Y(1) is bonded in a 4-coordinate geometry to one Co(1), one Co(2), and two equivalent Co(5) atoms. In the second Y site, Y(2) is bonded in a 5-coordinate geometry to one Co(2), one Co(4), one Co(5), and two equivalent Co(3) atoms. In the third Y site, Y(3) is bonded in a 6-coordinate geometry to one Co(2), one Co(5), two equivalent Co(3), and two equivalent Co(4) atoms. In the fourth Y site, Y(4) is bonded in a 4-coordinate geometry to one Co(2), one Co(5), and two equivalent Co(1) atoms. In the fifth Y site, Y(5) is bonded in a 4-coordinate geometry to one Co(1), one Co(2), one Co(3), and two equivalent Co(4) atoms. In the sixth Y site, Y(6) is bonded in a 4-coordinate geometry to one Co(2), two equivalent Co(3), and two equivalent Co(4) atoms. In the seventh Y site, Y(7) is bonded in a 4-coordinate geometry to one Co(3), one Co(5), and two equivalent Co(1) atoms. In the eighth Y site, Y(8) is bonded in a 3-coordinate geometry to one Co(2), one Co(5), and two equivalent Co(1) atoms. There are five inequivalent Co sites. In the first Co site, Co(1) is bonded in a 9-coordinate geometry to one Y(1), one Y(5), two equivalent Y(4), two equivalent Y(7), two equivalent Y(8), and one Co(1) atom. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to one Y(1), one Y(2), one Y(3), one Y(4), one Y(5), one Y(6), one Y(8), one Co(4), and one Co(5) atom. In the third Co site, Co(3) is bonded in a 9-coordinate geometry to one Y(5), one Y(7), two equivalent Y(2), two equivalent Y(3), two equivalent Y(6), and one Co(4) atom. In the fourth Co site, Co(4) is bonded in a 9-coordinate geometry to one Y(2), two equivalent Y(3), two equivalent Y(5), two equivalent Y(6), one Co(2), and one Co(3) atom. In the fifth Co site, Co(5) is bonded in a 8-coordinate geometry to one Y(2), one Y(3), one Y(4), one Y(7), one Y(8), two equivalent Y(1), and one Co(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Y8Co5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.185
_cell_length_b   7.040
_cell_length_c   24.139
_cell_angle_alpha   77.737
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1193.136
_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
  Y  Y0  1  0.183  0.644  0.963  1.0
  Y  Y1  1  0.683  0.356  0.537  1.0
  Y  Y2  1  0.817  0.356  0.037  1.0
  Y  Y3  1  0.317  0.644  0.463  1.0
  Y  Y4  1  0.167  0.530  0.823  1.0
  Y  Y5  1  0.667  0.470  0.677  1.0
  Y  Y6  1  0.833  0.470  0.177  1.0
  Y  Y7  1  0.333  0.530  0.323  1.0
  Y  Y8  1  0.816  0.688  0.298  1.0
  Y  Y9  1  0.316  0.312  0.202  1.0
  Y  Y10  1  0.184  0.312  0.702  1.0
  Y  Y11  1  0.684  0.688  0.798  1.0
  Y  Y12  1  0.835  0.786  0.441  1.0
  Y  Y13  1  0.335  0.214  0.059  1.0
  Y  Y14  1  0.165  0.214  0.559  1.0
  Y  Y15  1  0.665  0.786  0.941  1.0
  Y  Y16  1  0.186  0.001  0.335  1.0
  Y  Y17  1  0.686  0.999  0.165  1.0
  Y  Y18  1  0.814  0.999  0.665  1.0
  Y  Y19  1  0.314  0.001  0.835  1.0
  Y  Y20  1  0.188  0.818  0.196  1.0
  Y  Y21  1  0.688  0.182  0.304  1.0
  Y  Y22  1  0.812  0.182  0.804  1.0
  Y  Y23  1  0.312  0.818  0.696  1.0
  Y  Y24  1  0.960  0.316  0.415  1.0
  Y  Y25  1  0.460  0.684  0.085  1.0
  Y  Y26  1  0.040  0.684  0.585  1.0
  Y  Y27  1  0.540  0.316  0.915  1.0
  Y  Y28  1  0.978  0.859  0.065  1.0
  Y  Y29  1  0.478  0.141  0.435  1.0
  Y  Y30  1  0.022  0.141  0.935  1.0
  Y  Y31  1  0.522  0.859  0.565  1.0
  Co  Co32  1  0.146  0.974  0.483  1.0
  Co  Co33  1  0.646  0.026  0.017  1.0
  Co  Co34  1  0.854  0.026  0.517  1.0
  Co  Co35  1  0.354  0.974  0.983  1.0
  Co  Co36  1  0.033  0.167  0.132  1.0
  Co  Co37  1  0.533  0.833  0.368  1.0
  Co  Co38  1  0.967  0.833  0.868  1.0
  Co  Co39  1  0.467  0.167  0.632  1.0
  Co  Co40  1  0.031  0.360  0.282  1.0
  Co  Co41  1  0.531  0.640  0.218  1.0
  Co  Co42  1  0.969  0.640  0.718  1.0
  Co  Co43  1  0.469  0.360  0.782  1.0
  Co  Co44  1  0.028  0.905  0.765  1.0
  Co  Co45  1  0.528  0.095  0.735  1.0
  Co  Co46  1  0.972  0.095  0.235  1.0
  Co  Co47  1  0.472  0.905  0.265  1.0
  Co  Co48  1  0.882  0.509  0.904  1.0
  Co  Co49  1  0.382  0.491  0.596  1.0
  Co  Co50  1  0.118  0.491  0.096  1.0
  Co  Co51  1  0.618  0.509  0.404  1.0
[/CIF]
.
The material structure described by Y8Co5 crystallizes in the monoclinic P2_1/c space group. There are eight inequivalent Y sites. In the first Y site, Y(1) is bonded in a 4-coordinate geometry to one Co(1), one Co(2), and two equivalent Co(5) atoms. In the second Y site, Y(2) is bonded in a 5-coordinate geometry to one Co(2), one Co(4), one Co(5), and two equivalent Co(3) atoms. In the third Y site, Y(3) is bonded in a 6-coordinate geometry to one Co(2), one Co(5), two equivalent Co(3), and two equivalent Co(4) atoms. In the fourth Y site, Y(4) is bonded in a 4-coordinate geometry to one Co(2), one Co(5), and two equivalent Co(1) atoms. In the fifth Y site, Y(5) is bonded in a 4-coordinate geometry to one Co(1), one Co(2), one Co(3), and two equivalent Co(4) atoms. In the sixth Y site, Y(6) is bonded in a 4-coordinate geometry to one Co(2), two equivalent Co(3), and two equivalent Co(4) atoms. In the seventh Y site, Y(7) is bonded in a 4-coordinate geometry to one Co(3), one Co(5), and two equivalent Co(1) atoms. In the eighth Y site, Y(8) is bonded in a 3-coordinate geometry to one Co(2), one Co(5), and two equivalent Co(1) atoms. There are five inequivalent Co sites. In the first Co site, Co(1) is bonded in a 9-coordinate geometry to one Y(1), one Y(5), two equivalent Y(4), two equivalent Y(7), two equivalent Y(8), and one Co(1) atom. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to one Y(1), one Y(2), one Y(3), one Y(4), one Y(5), one Y(6), one Y(8), one Co(4), and one Co(5) atom. In the third Co site, Co(3) is bonded in a 9-coordinate geometry to one Y(5), one Y(7), two equivalent Y(2), two equivalent Y(3), two equivalent Y(6), and one Co(4) atom. In the fourth Co site, Co(4) is bonded in a 9-coordinate geometry to one Y(2), two equivalent Y(3), two equivalent Y(5), two equivalent Y(6), one Co(2), and one Co(3) atom. In the fifth Co site, Co(5) is bonded in a 8-coordinate geometry to one Y(2), one Y(3), one Y(4), one Y(7), one Y(8), two equivalent Y(1), and one Co(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Y8Co5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.185
_cell_length_b   7.040
_cell_length_c   24.139
_cell_angle_alpha   77.737
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1193.136
_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
  Y  Y0  1  0.183  0.644  0.963  1.0
  Y  Y1  1  0.683  0.356  0.537  1.0
  Y  Y2  1  0.817  0.356  0.037  1.0
  Y  Y3  1  0.317  0.644  0.463  1.0
  Y  Y4  1  0.167  0.530  0.823  1.0
  Y  Y5  1  0.667  0.470  0.677  1.0
  Y  Y6  1  0.833  0.470  0.177  1.0
  Y  Y7  1  0.333  0.530  0.323  1.0
  Y  Y8  1  0.816  0.688  0.298  1.0
  Y  Y9  1  0.316  0.312  0.202  1.0
  Y  Y10  1  0.184  0.312  0.702  1.0
  Y  Y11  1  0.684  0.688  0.798  1.0
  Y  Y12  1  0.835  0.786  0.441  1.0
  Y  Y13  1  0.335  0.214  0.059  1.0
  Y  Y14  1  0.165  0.214  0.559  1.0
  Y  Y15  1  0.665  0.786  0.941  1.0
  Y  Y16  1  0.186  0.001  0.335  1.0
  Y  Y17  1  0.686  0.999  0.165  1.0
  Y  Y18  1  0.814  0.999  0.665  1.0
  Y  Y19  1  0.314  0.001  0.835  1.0
  Y  Y20  1  0.188  0.818  0.196  1.0
  Y  Y21  1  0.688  0.182  0.304  1.0
  Y  Y22  1  0.812  0.182  0.804  1.0
  Y  Y23  1  0.312  0.818  0.696  1.0
  Y  Y24  1  0.960  0.316  0.415  1.0
  Y  Y25  1  0.460  0.684  0.085  1.0
  Y  Y26  1  0.040  0.684  0.585  1.0
  Y  Y27  1  0.540  0.316  0.915  1.0
  Y  Y28  1  0.978  0.859  0.065  1.0
  Y  Y29  1  0.478  0.141  0.435  1.0
  Y  Y30  1  0.022  0.141  0.935  1.0
  Y  Y31  1  0.522  0.859  0.565  1.0
  Co  Co32  1  0.146  0.974  0.483  1.0
  Co  Co33  1  0.646  0.026  0.017  1.0
  Co  Co34  1  0.854  0.026  0.517  1.0
  Co  Co35  1  0.354  0.974  0.983  1.0
  Co  Co36  1  0.033  0.167  0.132  1.0
  Co  Co37  1  0.533  0.833  0.368  1.0
  Co  Co38  1  0.967  0.833  0.868  1.0
  Co  Co39  1  0.467  0.167  0.632  1.0
  Co  Co40  1  0.031  0.360  0.282  1.0
  Co  Co41  1  0.531  0.640  0.218  1.0
  Co  Co42  1  0.969  0.640  0.718  1.0
  Co  Co43  1  0.469  0.360  0.782  1.0
  Co  Co44  1  0.028  0.905  0.765  1.0
  Co  Co45  1  0.528  0.095  0.735  1.0
  Co  Co46  1  0.972  0.095  0.235  1.0
  Co  Co47  1  0.472  0.905  0.265  1.0
  Co  Co48  1  0.882  0.509  0.904  1.0
  Co  Co49  1  0.382  0.491  0.596  1.0
  Co  Co50  1  0.118  0.491  0.096  1.0
  Co  Co51  1  0.618  0.509  0.404  1.0
[/CIF]
.