The structure described by Co is gamma-brass-derived structured and crystallizes in the hexagonal P6_3mc space group. There are eleven inequivalent Co sites. In the first Co site, Co(1) is bonded in a 14-coordinate geometry to two equivalent Co(7), three equivalent Co(2), three equivalent Co(3), three equivalent Co(5), and three equivalent Co(8) atoms. In the second Co site, Co(2) is bonded in a 11-coordinate geometry to one Co(1), one Co(11), one Co(3), one Co(5), one Co(7), two equivalent Co(4), two equivalent Co(6), and two equivalent Co(8) atoms. In the third Co site, Co(3) is bonded in a 9-coordinate geometry to one Co(1), one Co(2), one Co(7), one Co(8), one Co(9), two equivalent Co(4), two equivalent Co(5), and two equivalent Co(6) atoms. In the fourth Co site, Co(4) is bonded to one Co(10), one Co(11), two equivalent Co(2), two equivalent Co(3), two equivalent Co(5), two equivalent Co(6), and two equivalent Co(8) atoms to form a mixture of distorted corner and face-sharing CoCo12 cuboctahedra. In the fifth Co site, Co(11) is bonded in a 9-coordinate geometry to one Co(10), three equivalent Co(2), three equivalent Co(4), and three equivalent Co(6) atoms. In the sixth Co site, Co(5) is bonded in a 11-coordinate geometry to one Co(1), one Co(10), one Co(2), one Co(7), one Co(8), two equivalent Co(3), two equivalent Co(4), and two equivalent Co(6) atoms. In the seventh Co site, Co(6) is bonded in a 13-coordinate geometry to one Co(10), one Co(11), one Co(9), two equivalent Co(2), two equivalent Co(3), two equivalent Co(4), two equivalent Co(5), and two equivalent Co(8) atoms. In the eighth Co site, Co(7) is bonded in a 14-coordinate geometry to two equivalent Co(1), three equivalent Co(2), three equivalent Co(3), three equivalent Co(5), and three equivalent Co(8) atoms. In the ninth Co site, Co(8) is bonded in a 12-coordinate geometry to one Co(1), one Co(10), one Co(3), one Co(5), one Co(7), one Co(9), two equivalent Co(2), two equivalent Co(4), and two equivalent Co(6) atoms. In the tenth Co site, Co(9) is bonded in a 10-coordinate geometry to one Co(10), three equivalent Co(3), three equivalent Co(6), and three equivalent Co(8) atoms. In the eleventh Co site, Co(10) is bonded in a 14-coordinate geometry to one Co(11), one Co(9), three equivalent Co(4), three equivalent Co(5), three equivalent Co(6), and three equivalent Co(8) atoms. is represented by the CIF file [CIF]
data_Co
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.860
_cell_length_b   7.860
_cell_length_c   9.686
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   518.248
_cell_formula_units_Z   46
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
  Co  Co0  1  0.000  0.000  0.352  1.0
  Co  Co1  1  0.326  0.163  0.478  1.0
  Co  Co2  1  0.189  0.377  0.228  1.0
  Co  Co3  1  0.002  0.501  0.097  1.0
  Co  Co4  1  0.811  0.189  0.728  1.0
  Co  Co5  1  0.499  0.501  0.097  1.0
  Co  Co6  1  0.675  0.838  0.726  1.0
  Co  Co7  1  0.000  0.000  0.852  1.0
  Co  Co8  1  0.499  0.998  0.097  1.0
  Co  Co9  1  0.485  0.515  0.847  1.0
  Co  Co10  1  0.837  0.674  0.478  1.0
  Co  Co11  1  0.000  0.000  0.104  1.0
  Co  Co12  1  0.175  0.351  0.478  1.0
  Co  Co13  1  0.837  0.163  0.478  1.0
  Co  Co14  1  0.351  0.175  0.978  1.0
  Co  Co15  1  0.825  0.649  0.978  1.0
  Co  Co16  1  0.333  0.667  0.384  1.0
  Co  Co17  1  0.825  0.175  0.978  1.0
  Co  Co18  1  0.674  0.837  0.978  1.0
  Co  Co19  1  0.029  0.515  0.847  1.0
  Co  Co20  1  0.515  0.029  0.347  1.0
  Co  Co21  1  0.501  0.499  0.597  1.0
  Co  Co22  1  0.649  0.825  0.478  1.0
  Co  Co23  1  0.623  0.811  0.228  1.0
  Co  Co24  1  0.515  0.485  0.347  1.0
  Co  Co25  1  0.163  0.837  0.978  1.0
  Co  Co26  1  0.501  0.002  0.597  1.0
  Co  Co27  1  0.838  0.675  0.226  1.0
  Co  Co28  1  0.333  0.667  0.679  1.0
  Co  Co29  1  0.162  0.325  0.726  1.0
  Co  Co30  1  0.971  0.485  0.347  1.0
  Co  Co31  1  0.667  0.333  0.179  1.0
  Co  Co32  1  0.485  0.971  0.847  1.0
  Co  Co33  1  0.175  0.825  0.478  1.0
  Co  Co34  1  0.838  0.162  0.226  1.0
  Co  Co35  1  0.163  0.326  0.978  1.0
  Co  Co36  1  0.667  0.333  0.884  1.0
  Co  Co37  1  0.667  0.333  0.490  1.0
  Co  Co38  1  0.811  0.623  0.728  1.0
  Co  Co39  1  0.162  0.838  0.726  1.0
  Co  Co40  1  0.377  0.189  0.728  1.0
  Co  Co41  1  0.000  0.000  0.604  1.0
  Co  Co42  1  0.325  0.162  0.226  1.0
  Co  Co43  1  0.333  0.667  0.990  1.0
  Co  Co44  1  0.189  0.811  0.228  1.0
  Co  Co45  1  0.998  0.499  0.597  1.0
[/CIF]
.
The structure described by Co is gamma-brass-derived structured and crystallizes in the hexagonal P6_3mc space group. There are eleven inequivalent Co sites. In the first Co site, Co(1) is bonded in a 14-coordinate geometry to two equivalent Co(7), three equivalent Co(2), three equivalent Co(3), three equivalent Co(5), and three equivalent Co(8) atoms. In the second Co site, Co(2) is bonded in a 11-coordinate geometry to one Co(1), one Co(11), one Co(3), one Co(5), one Co(7), two equivalent Co(4), two equivalent Co(6), and two equivalent Co(8) atoms. In the third Co site, Co(3) is bonded in a 9-coordinate geometry to one Co(1), one Co(2), one Co(7), one Co(8), one Co(9), two equivalent Co(4), two equivalent Co(5), and two equivalent Co(6) atoms. In the fourth Co site, Co(4) is bonded to one Co(10), one Co(11), two equivalent Co(2), two equivalent Co(3), two equivalent Co(5), two equivalent Co(6), and two equivalent Co(8) atoms to form a mixture of distorted corner and face-sharing CoCo12 cuboctahedra. In the fifth Co site, Co(11) is bonded in a 9-coordinate geometry to one Co(10), three equivalent Co(2), three equivalent Co(4), and three equivalent Co(6) atoms. In the sixth Co site, Co(5) is bonded in a 11-coordinate geometry to one Co(1), one Co(10), one Co(2), one Co(7), one Co(8), two equivalent Co(3), two equivalent Co(4), and two equivalent Co(6) atoms. In the seventh Co site, Co(6) is bonded in a 13-coordinate geometry to one Co(10), one Co(11), one Co(9), two equivalent Co(2), two equivalent Co(3), two equivalent Co(4), two equivalent Co(5), and two equivalent Co(8) atoms. In the eighth Co site, Co(7) is bonded in a 14-coordinate geometry to two equivalent Co(1), three equivalent Co(2), three equivalent Co(3), three equivalent Co(5), and three equivalent Co(8) atoms. In the ninth Co site, Co(8) is bonded in a 12-coordinate geometry to one Co(1), one Co(10), one Co(3), one Co(5), one Co(7), one Co(9), two equivalent Co(2), two equivalent Co(4), and two equivalent Co(6) atoms. In the tenth Co site, Co(9) is bonded in a 10-coordinate geometry to one Co(10), three equivalent Co(3), three equivalent Co(6), and three equivalent Co(8) atoms. In the eleventh Co site, Co(10) is bonded in a 14-coordinate geometry to one Co(11), one Co(9), three equivalent Co(4), three equivalent Co(5), three equivalent Co(6), and three equivalent Co(8) atoms. is represented by the CIF file [CIF]
data_Co
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.860
_cell_length_b   7.860
_cell_length_c   9.686
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   518.248
_cell_formula_units_Z   46
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
  Co  Co0  1  0.000  0.000  0.352  1.0
  Co  Co1  1  0.326  0.163  0.478  1.0
  Co  Co2  1  0.189  0.377  0.228  1.0
  Co  Co3  1  0.002  0.501  0.097  1.0
  Co  Co4  1  0.811  0.189  0.728  1.0
  Co  Co5  1  0.499  0.501  0.097  1.0
  Co  Co6  1  0.675  0.838  0.726  1.0
  Co  Co7  1  0.000  0.000  0.852  1.0
  Co  Co8  1  0.499  0.998  0.097  1.0
  Co  Co9  1  0.485  0.515  0.847  1.0
  Co  Co10  1  0.837  0.674  0.478  1.0
  Co  Co11  1  0.000  0.000  0.104  1.0
  Co  Co12  1  0.175  0.351  0.478  1.0
  Co  Co13  1  0.837  0.163  0.478  1.0
  Co  Co14  1  0.351  0.175  0.978  1.0
  Co  Co15  1  0.825  0.649  0.978  1.0
  Co  Co16  1  0.333  0.667  0.384  1.0
  Co  Co17  1  0.825  0.175  0.978  1.0
  Co  Co18  1  0.674  0.837  0.978  1.0
  Co  Co19  1  0.029  0.515  0.847  1.0
  Co  Co20  1  0.515  0.029  0.347  1.0
  Co  Co21  1  0.501  0.499  0.597  1.0
  Co  Co22  1  0.649  0.825  0.478  1.0
  Co  Co23  1  0.623  0.811  0.228  1.0
  Co  Co24  1  0.515  0.485  0.347  1.0
  Co  Co25  1  0.163  0.837  0.978  1.0
  Co  Co26  1  0.501  0.002  0.597  1.0
  Co  Co27  1  0.838  0.675  0.226  1.0
  Co  Co28  1  0.333  0.667  0.679  1.0
  Co  Co29  1  0.162  0.325  0.726  1.0
  Co  Co30  1  0.971  0.485  0.347  1.0
  Co  Co31  1  0.667  0.333  0.179  1.0
  Co  Co32  1  0.485  0.971  0.847  1.0
  Co  Co33  1  0.175  0.825  0.478  1.0
  Co  Co34  1  0.838  0.162  0.226  1.0
  Co  Co35  1  0.163  0.326  0.978  1.0
  Co  Co36  1  0.667  0.333  0.884  1.0
  Co  Co37  1  0.667  0.333  0.490  1.0
  Co  Co38  1  0.811  0.623  0.728  1.0
  Co  Co39  1  0.162  0.838  0.726  1.0
  Co  Co40  1  0.377  0.189  0.728  1.0
  Co  Co41  1  0.000  0.000  0.604  1.0
  Co  Co42  1  0.325  0.162  0.226  1.0
  Co  Co43  1  0.333  0.667  0.990  1.0
  Co  Co44  1  0.189  0.811  0.228  1.0
  Co  Co45  1  0.998  0.499  0.597  1.0
[/CIF]
.