The material described by Co5CuO8 is Spinel-like structured and crystallizes in the triclinic P-1 space group. There are eight inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(4), one O(6), and one O(8) atom to form CoO4 tetrahedra that share  a cornercorner with one Co(3)O6 octahedra,  a cornercorner with one Co(4)O6 octahedra,  a cornercorner with one Co(6)O6 octahedra, corners with two equivalent Co(5)O6 octahedra, corners with two equivalent Co(7)O6 octahedra, corners with two equivalent Co(8)O6 octahedra, and corners with three equivalent Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-60°. In the second Co site, Co(2) is bonded to one O(2), one O(3), one O(5), and one O(7) atom to form CoO4 tetrahedra that share  a cornercorner with one Co(5)O6 octahedra,  a cornercorner with one Co(7)O6 octahedra,  a cornercorner with one Co(8)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, corners with two equivalent Co(4)O6 octahedra, corners with two equivalent Co(6)O6 octahedra, and corners with three equivalent Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-61°. In the third Co site, Co(3) is bonded to two equivalent O(1), two equivalent O(5), and two equivalent O(7) atoms to form CoO6 octahedra that share corners with two equivalent Co(1)O4 tetrahedra, corners with four equivalent Co(2)O4 tetrahedra, edges with two equivalent Co(4)O6 octahedra, edges with two equivalent Co(6)O6 octahedra, and edges with two equivalent Cu(1)O6 octahedra. In the fourth Co site, Co(4) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(7) atoms to form CoO6 octahedra that share corners with two equivalent Co(1)O4 tetrahedra, corners with four equivalent Co(2)O4 tetrahedra, edges with two equivalent Co(3)O6 octahedra, edges with two equivalent Co(6)O6 octahedra, and edges with two equivalent Cu(1)O6 octahedra. In the fifth Co site, Co(5) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(8) atoms to form CoO6 octahedra that share corners with two equivalent Co(2)O4 tetrahedra, corners with four equivalent Co(1)O4 tetrahedra, edges with two equivalent Co(7)O6 octahedra, edges with two equivalent Co(8)O6 octahedra, and edges with two equivalent Cu(1)O6 octahedra. In the sixth Co site, Co(6) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms to form CoO6 octahedra that share corners with two equivalent Co(1)O4 tetrahedra, corners with four equivalent Co(2)O4 tetrahedra, edges with two equivalent Co(3)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and edges with two equivalent Cu(1)O6 octahedra. In the seventh Co site, Co(7) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms to form CoO6 octahedra that share corners with two equivalent Co(2)O4 tetrahedra, corners with four equivalent Co(1)O4 tetrahedra, edges with two equivalent Co(5)O6 octahedra, edges with two equivalent Co(8)O6 octahedra, and edges with two equivalent Cu(1)O6 octahedra. In the eighth Co site, Co(8) is bonded to two equivalent O(2), two equivalent O(6), and two equivalent O(8) atoms to form CoO6 octahedra that share corners with two equivalent Co(2)O4 tetrahedra, corners with four equivalent Co(1)O4 tetrahedra, edges with two equivalent Co(5)O6 octahedra, edges with two equivalent Co(7)O6 octahedra, and edges with two equivalent Cu(1)O6 octahedra. Cu(1) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form CuO6 octahedra that share corners with three equivalent Co(1)O4 tetrahedra, corners with three equivalent Co(2)O4 tetrahedra,  an edgeedge with one Co(3)O6 octahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(5)O6 octahedra,  an edgeedge with one Co(6)O6 octahedra,  an edgeedge with one Co(7)O6 octahedra, and  an edgeedge with one Co(8)O6 octahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Co(1), one Co(3), one Co(4), and one Co(6) atom to form distorted OCo4 trigonal pyramids that share  a cornercorner with one O(4)Co3Cu trigonal pyramid and corners with three equivalent O(1)Co4 trigonal pyramids. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Co(2), one Co(5), one Co(7), and one Co(8) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Co(2), one Co(4), one Co(6), and one Cu(1) atom. In the fourth O site, O(4) is bonded to one Co(1), one Co(5), one Co(7), and one Cu(1) atom to form distorted OCo3Cu trigonal pyramids that share  a cornercorner with one O(1)Co4 trigonal pyramid and corners with two equivalent O(4)Co3Cu trigonal pyramids. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Co(2), one Co(3), one Co(6), and one Cu(1) atom. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Co(1), one Co(7), one Co(8), and one Cu(1) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Co(2), one Co(3), one Co(4), and one Cu(1) atom. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Co(1), one Co(5), one Co(8), and one Cu(1) atom. is represented by the CIF card [CIF]
data_Co5CuO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.841
_cell_length_b   5.864
_cell_length_c   5.879
_cell_angle_alpha   91.276
_cell_angle_beta   119.156
_cell_angle_gamma   119.257
_symmetry_Int_Tables_number   1
_cell_volume   144.201
_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
  Co  Co0  1  0.002  0.001  0.002  1.0
  Co  Co1  1  0.498  0.249  0.748  1.0
  Co  Co2  1  0.750  0.625  0.375  1.0
  Co  Co3  1  0.750  0.125  0.375  1.0
  Co  Co4  1  0.250  0.625  0.375  1.0
  Cu  Cu5  1  0.250  0.625  0.875  1.0
  O  O6  1  0.766  0.383  0.151  1.0
  O  O7  1  0.734  0.867  0.599  1.0
  O  O8  1  0.227  0.379  0.608  1.0
  O  O9  1  0.275  0.407  0.139  1.0
  O  O10  1  0.273  0.871  0.142  1.0
  O  O11  1  0.735  0.867  0.141  1.0
  O  O12  1  0.765  0.383  0.609  1.0
  O  O13  1  0.225  0.843  0.611  1.0
[/CIF]
.
The material described by Co5CuO8 is Spinel-like structured and crystallizes in the triclinic P-1 space group. There are eight inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(4), one O(6), and one O(8) atom to form CoO4 tetrahedra that share  a cornercorner with one Co(3)O6 octahedra,  a cornercorner with one Co(4)O6 octahedra,  a cornercorner with one Co(6)O6 octahedra, corners with two equivalent Co(5)O6 octahedra, corners with two equivalent Co(7)O6 octahedra, corners with two equivalent Co(8)O6 octahedra, and corners with three equivalent Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-60°. In the second Co site, Co(2) is bonded to one O(2), one O(3), one O(5), and one O(7) atom to form CoO4 tetrahedra that share  a cornercorner with one Co(5)O6 octahedra,  a cornercorner with one Co(7)O6 octahedra,  a cornercorner with one Co(8)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, corners with two equivalent Co(4)O6 octahedra, corners with two equivalent Co(6)O6 octahedra, and corners with three equivalent Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-61°. In the third Co site, Co(3) is bonded to two equivalent O(1), two equivalent O(5), and two equivalent O(7) atoms to form CoO6 octahedra that share corners with two equivalent Co(1)O4 tetrahedra, corners with four equivalent Co(2)O4 tetrahedra, edges with two equivalent Co(4)O6 octahedra, edges with two equivalent Co(6)O6 octahedra, and edges with two equivalent Cu(1)O6 octahedra. In the fourth Co site, Co(4) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(7) atoms to form CoO6 octahedra that share corners with two equivalent Co(1)O4 tetrahedra, corners with four equivalent Co(2)O4 tetrahedra, edges with two equivalent Co(3)O6 octahedra, edges with two equivalent Co(6)O6 octahedra, and edges with two equivalent Cu(1)O6 octahedra. In the fifth Co site, Co(5) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(8) atoms to form CoO6 octahedra that share corners with two equivalent Co(2)O4 tetrahedra, corners with four equivalent Co(1)O4 tetrahedra, edges with two equivalent Co(7)O6 octahedra, edges with two equivalent Co(8)O6 octahedra, and edges with two equivalent Cu(1)O6 octahedra. In the sixth Co site, Co(6) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms to form CoO6 octahedra that share corners with two equivalent Co(1)O4 tetrahedra, corners with four equivalent Co(2)O4 tetrahedra, edges with two equivalent Co(3)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and edges with two equivalent Cu(1)O6 octahedra. In the seventh Co site, Co(7) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms to form CoO6 octahedra that share corners with two equivalent Co(2)O4 tetrahedra, corners with four equivalent Co(1)O4 tetrahedra, edges with two equivalent Co(5)O6 octahedra, edges with two equivalent Co(8)O6 octahedra, and edges with two equivalent Cu(1)O6 octahedra. In the eighth Co site, Co(8) is bonded to two equivalent O(2), two equivalent O(6), and two equivalent O(8) atoms to form CoO6 octahedra that share corners with two equivalent Co(2)O4 tetrahedra, corners with four equivalent Co(1)O4 tetrahedra, edges with two equivalent Co(5)O6 octahedra, edges with two equivalent Co(7)O6 octahedra, and edges with two equivalent Cu(1)O6 octahedra. Cu(1) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form CuO6 octahedra that share corners with three equivalent Co(1)O4 tetrahedra, corners with three equivalent Co(2)O4 tetrahedra,  an edgeedge with one Co(3)O6 octahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(5)O6 octahedra,  an edgeedge with one Co(6)O6 octahedra,  an edgeedge with one Co(7)O6 octahedra, and  an edgeedge with one Co(8)O6 octahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Co(1), one Co(3), one Co(4), and one Co(6) atom to form distorted OCo4 trigonal pyramids that share  a cornercorner with one O(4)Co3Cu trigonal pyramid and corners with three equivalent O(1)Co4 trigonal pyramids. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Co(2), one Co(5), one Co(7), and one Co(8) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Co(2), one Co(4), one Co(6), and one Cu(1) atom. In the fourth O site, O(4) is bonded to one Co(1), one Co(5), one Co(7), and one Cu(1) atom to form distorted OCo3Cu trigonal pyramids that share  a cornercorner with one O(1)Co4 trigonal pyramid and corners with two equivalent O(4)Co3Cu trigonal pyramids. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Co(2), one Co(3), one Co(6), and one Cu(1) atom. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Co(1), one Co(7), one Co(8), and one Cu(1) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Co(2), one Co(3), one Co(4), and one Cu(1) atom. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Co(1), one Co(5), one Co(8), and one Cu(1) atom. is represented by the CIF card [CIF]
data_Co5CuO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.841
_cell_length_b   5.864
_cell_length_c   5.879
_cell_angle_alpha   91.276
_cell_angle_beta   119.156
_cell_angle_gamma   119.257
_symmetry_Int_Tables_number   1
_cell_volume   144.201
_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
  Co  Co0  1  0.002  0.001  0.002  1.0
  Co  Co1  1  0.498  0.249  0.748  1.0
  Co  Co2  1  0.750  0.625  0.375  1.0
  Co  Co3  1  0.750  0.125  0.375  1.0
  Co  Co4  1  0.250  0.625  0.375  1.0
  Cu  Cu5  1  0.250  0.625  0.875  1.0
  O  O6  1  0.766  0.383  0.151  1.0
  O  O7  1  0.734  0.867  0.599  1.0
  O  O8  1  0.227  0.379  0.608  1.0
  O  O9  1  0.275  0.407  0.139  1.0
  O  O10  1  0.273  0.871  0.142  1.0
  O  O11  1  0.735  0.867  0.141  1.0
  O  O12  1  0.765  0.383  0.609  1.0
  O  O13  1  0.225  0.843  0.611  1.0
[/CIF]
.