The material structure described by Hf6Co23 crystallizes in the cubic Fm-3m space group. Hf(1) is bonded in a 12-coordinate geometry to four equivalent Co(2), four equivalent Co(3), and four equivalent Co(4) atoms. There are four inequivalent Co sites. In the first Co site, Co(4) is bonded in a distorted q6 geometry to three equivalent Hf(1), three equivalent Co(2), three equivalent Co(3), and three equivalent Co(4) atoms. In the second Co site, Co(1) is bonded in a body-centered cubic geometry to eight equivalent Co(3) atoms. In the third Co site, Co(2) is bonded to four equivalent Hf(1), four equivalent Co(3), and four equivalent Co(4) atoms to form a mixture of face and corner-sharing CoHf4Co8 cuboctahedra. In the fourth Co site, Co(3) is bonded in a 13-coordinate geometry to three equivalent Hf(1), one Co(1), three equivalent Co(2), three equivalent Co(3), and three equivalent Co(4) atoms. is represented by the CIF card [CIF]
data_Hf6Co23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.058
_cell_length_b   8.058
_cell_length_c   8.058
_cell_angle_alpha   59.999
_cell_angle_beta   59.999
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   369.940
_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
  Hf  Hf0  1  0.710  0.710  0.290  1.0
  Hf  Hf1  1  0.290  0.710  0.290  1.0
  Hf  Hf2  1  0.710  0.290  0.290  1.0
  Hf  Hf3  1  0.290  0.290  0.710  1.0
  Hf  Hf4  1  0.710  0.290  0.710  1.0
  Hf  Hf5  1  0.290  0.710  0.710  1.0
  Co  Co6  1  0.000  0.000  0.000  1.0
  Co  Co7  1  0.000  0.000  0.500  1.0
  Co  Co8  1  0.500  0.000  0.500  1.0
  Co  Co9  1  0.000  0.500  0.500  1.0
  Co  Co10  1  0.500  0.500  0.000  1.0
  Co  Co11  1  0.000  0.500  0.000  1.0
  Co  Co12  1  0.500  0.000  0.000  1.0
  Co  Co13  1  0.878  0.878  0.365  1.0
  Co  Co14  1  0.878  0.365  0.878  1.0
  Co  Co15  1  0.365  0.878  0.878  1.0
  Co  Co16  1  0.878  0.878  0.878  1.0
  Co  Co17  1  0.122  0.122  0.635  1.0
  Co  Co18  1  0.122  0.635  0.122  1.0
  Co  Co19  1  0.635  0.122  0.122  1.0
  Co  Co20  1  0.122  0.122  0.122  1.0
  Co  Co21  1  0.673  0.673  0.980  1.0
  Co  Co22  1  0.673  0.980  0.673  1.0
  Co  Co23  1  0.980  0.673  0.673  1.0
  Co  Co24  1  0.673  0.673  0.673  1.0
  Co  Co25  1  0.327  0.327  0.020  1.0
  Co  Co26  1  0.327  0.020  0.327  1.0
  Co  Co27  1  0.020  0.327  0.327  1.0
  Co  Co28  1  0.327  0.327  0.327  1.0
[/CIF]
.
The material structure described by Hf6Co23 crystallizes in the cubic Fm-3m space group. Hf(1) is bonded in a 12-coordinate geometry to four equivalent Co(2), four equivalent Co(3), and four equivalent Co(4) atoms. There are four inequivalent Co sites. In the first Co site, Co(4) is bonded in a distorted q6 geometry to three equivalent Hf(1), three equivalent Co(2), three equivalent Co(3), and three equivalent Co(4) atoms. In the second Co site, Co(1) is bonded in a body-centered cubic geometry to eight equivalent Co(3) atoms. In the third Co site, Co(2) is bonded to four equivalent Hf(1), four equivalent Co(3), and four equivalent Co(4) atoms to form a mixture of face and corner-sharing CoHf4Co8 cuboctahedra. In the fourth Co site, Co(3) is bonded in a 13-coordinate geometry to three equivalent Hf(1), one Co(1), three equivalent Co(2), three equivalent Co(3), and three equivalent Co(4) atoms. is represented by the CIF card [CIF]
data_Hf6Co23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.058
_cell_length_b   8.058
_cell_length_c   8.058
_cell_angle_alpha   59.999
_cell_angle_beta   59.999
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   369.940
_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
  Hf  Hf0  1  0.710  0.710  0.290  1.0
  Hf  Hf1  1  0.290  0.710  0.290  1.0
  Hf  Hf2  1  0.710  0.290  0.290  1.0
  Hf  Hf3  1  0.290  0.290  0.710  1.0
  Hf  Hf4  1  0.710  0.290  0.710  1.0
  Hf  Hf5  1  0.290  0.710  0.710  1.0
  Co  Co6  1  0.000  0.000  0.000  1.0
  Co  Co7  1  0.000  0.000  0.500  1.0
  Co  Co8  1  0.500  0.000  0.500  1.0
  Co  Co9  1  0.000  0.500  0.500  1.0
  Co  Co10  1  0.500  0.500  0.000  1.0
  Co  Co11  1  0.000  0.500  0.000  1.0
  Co  Co12  1  0.500  0.000  0.000  1.0
  Co  Co13  1  0.878  0.878  0.365  1.0
  Co  Co14  1  0.878  0.365  0.878  1.0
  Co  Co15  1  0.365  0.878  0.878  1.0
  Co  Co16  1  0.878  0.878  0.878  1.0
  Co  Co17  1  0.122  0.122  0.635  1.0
  Co  Co18  1  0.122  0.635  0.122  1.0
  Co  Co19  1  0.635  0.122  0.122  1.0
  Co  Co20  1  0.122  0.122  0.122  1.0
  Co  Co21  1  0.673  0.673  0.980  1.0
  Co  Co22  1  0.673  0.980  0.673  1.0
  Co  Co23  1  0.980  0.673  0.673  1.0
  Co  Co24  1  0.673  0.673  0.673  1.0
  Co  Co25  1  0.327  0.327  0.020  1.0
  Co  Co26  1  0.327  0.020  0.327  1.0
  Co  Co27  1  0.020  0.327  0.327  1.0
  Co  Co28  1  0.327  0.327  0.327  1.0
[/CIF]
.