The crystal structure described by Cu8O crystallizes in the orthorhombic Cmmm space group. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 11-coordinate geometry to one Cu(1), two equivalent Cu(2), and eight equivalent Cu(3) atoms. In the second Cu site, Cu(2) is bonded in a single-bond geometry to two equivalent Cu(1) and one O(1) atom. In the third Cu site, Cu(3) is bonded in a single-bond geometry to four equivalent Cu(1) and one O(1) atom. O(1) is bonded in an octahedral geometry to two equivalent Cu(2) and four equivalent Cu(3) atoms. is represented by the CIF file [CIF]
data_Cu8O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.418
_cell_length_b   4.418
_cell_length_c   5.437
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   91.317
_symmetry_Int_Tables_number   1
_cell_volume   106.080
_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
  Cu  Cu0  1  0.788  0.788  0.500  1.0
  Cu  Cu1  1  0.212  0.212  0.500  1.0
  Cu  Cu2  1  0.812  0.812  0.000  1.0
  Cu  Cu3  1  0.188  0.188  0.000  1.0
  Cu  Cu4  1  0.276  0.724  0.273  1.0
  Cu  Cu5  1  0.276  0.724  0.727  1.0
  Cu  Cu6  1  0.724  0.276  0.727  1.0
  Cu  Cu7  1  0.724  0.276  0.273  1.0
  O  O8  1  0.500  0.500  0.000  1.0
[/CIF]
.
The crystal structure described by Cu8O crystallizes in the orthorhombic Cmmm space group. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 11-coordinate geometry to one Cu(1), two equivalent Cu(2), and eight equivalent Cu(3) atoms. In the second Cu site, Cu(2) is bonded in a single-bond geometry to two equivalent Cu(1) and one O(1) atom. In the third Cu site, Cu(3) is bonded in a single-bond geometry to four equivalent Cu(1) and one O(1) atom. O(1) is bonded in an octahedral geometry to two equivalent Cu(2) and four equivalent Cu(3) atoms. is represented by the CIF file [CIF]
data_Cu8O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.418
_cell_length_b   4.418
_cell_length_c   5.437
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   91.317
_symmetry_Int_Tables_number   1
_cell_volume   106.080
_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
  Cu  Cu0  1  0.788  0.788  0.500  1.0
  Cu  Cu1  1  0.212  0.212  0.500  1.0
  Cu  Cu2  1  0.812  0.812  0.000  1.0
  Cu  Cu3  1  0.188  0.188  0.000  1.0
  Cu  Cu4  1  0.276  0.724  0.273  1.0
  Cu  Cu5  1  0.276  0.724  0.727  1.0
  Cu  Cu6  1  0.724  0.276  0.727  1.0
  Cu  Cu7  1  0.724  0.276  0.273  1.0
  O  O8  1  0.500  0.500  0.000  1.0
[/CIF]
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