The crystal structure described by Cd(CoO2)2 crystallizes in the monoclinic P2_1/m space group. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form CoO6 octahedra that share corners with three equivalent Cd(2)O6 pentagonal pyramids, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, and  an edgeedge with one Cd(2)O6 pentagonal pyramid. In the second Co site, Co(2) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form CoO6 octahedra that share edges with two equivalent Co(3)O6 octahedra, edges with four equivalent Co(1)O6 octahedra, and edges with two equivalent Cd(2)O6 pentagonal pyramids. In the third Co site, Co(3) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form CoO6 octahedra that share edges with two equivalent Co(2)O6 octahedra, edges with four equivalent Co(1)O6 octahedra, and edges with two equivalent Cd(2)O6 pentagonal pyramids. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. In the second Cd site, Cd(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted CdO6 pentagonal pyramids that share corners with six equivalent Co(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, and edges with two equivalent Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-18°. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Co(2), two equivalent Co(1), one Cd(1), and one Cd(2) atom to form OCd2Co3 trigonal bipyramids that share  a cornercorner with one O(1)Cd2Co3 trigonal bipyramid, corners with four equivalent O(2)Cd2Co3 trigonal bipyramids, corners with two equivalent O(4)CdCo3 trigonal pyramids, edges with two equivalent O(1)Cd2Co3 trigonal bipyramids, edges with two equivalent O(2)Cd2Co3 trigonal bipyramids, and edges with two equivalent O(4)CdCo3 trigonal pyramids. In the second O site, O(2) is bonded to one Co(3), two equivalent Co(1), one Cd(1), and one Cd(2) atom to form OCd2Co3 trigonal bipyramids that share  a cornercorner with one O(2)Cd2Co3 trigonal bipyramid, corners with four equivalent O(1)Cd2Co3 trigonal bipyramids, corners with two equivalent O(4)CdCo3 trigonal pyramids, edges with two equivalent O(1)Cd2Co3 trigonal bipyramids, edges with two equivalent O(2)Cd2Co3 trigonal bipyramids, and edges with two equivalent O(4)CdCo3 trigonal pyramids. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Co(1), one Co(2), one Co(3), and one Cd(2) atom. In the fourth O site, O(4) is bonded to one Co(1), one Co(2), one Co(3), and one Cd(1) atom to form OCdCo3 trigonal pyramids that share corners with two equivalent O(1)Cd2Co3 trigonal bipyramids, corners with two equivalent O(2)Cd2Co3 trigonal bipyramids, corners with three equivalent O(4)CdCo3 trigonal pyramids, edges with two equivalent O(1)Cd2Co3 trigonal bipyramids, and edges with two equivalent O(2)Cd2Co3 trigonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cd(CoO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.997
_cell_length_b   5.115
_cell_length_c   5.955
_cell_angle_alpha   89.929
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   334.981
_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
  Cd  Cd0  1  0.250  0.475  0.744  1.0
  Cd  Cd1  1  0.750  0.147  0.754  1.0
  Cd  Cd2  1  0.250  0.853  0.246  1.0
  Cd  Cd3  1  0.750  0.525  0.256  1.0
  Co  Co4  1  0.015  0.489  0.250  1.0
  Co  Co5  1  0.985  0.511  0.750  1.0
  Co  Co6  1  0.485  0.489  0.250  1.0
  Co  Co7  1  0.515  0.511  0.750  1.0
  Co  Co8  1  0.000  0.000  0.000  1.0
  Co  Co9  1  0.500  0.000  0.000  1.0
  Co  Co10  1  0.000  0.000  0.500  1.0
  Co  Co11  1  0.500  0.000  0.500  1.0
  O  O12  1  0.896  0.334  0.005  1.0
  O  O13  1  0.604  0.334  0.005  1.0
  O  O14  1  0.604  0.335  0.499  1.0
  O  O15  1  0.896  0.335  0.499  1.0
  O  O16  1  0.099  0.163  0.250  1.0
  O  O17  1  0.401  0.163  0.250  1.0
  O  O18  1  0.088  0.177  0.749  1.0
  O  O19  1  0.412  0.177  0.749  1.0
  O  O20  1  0.588  0.823  0.251  1.0
  O  O21  1  0.912  0.823  0.251  1.0
  O  O22  1  0.599  0.837  0.750  1.0
  O  O23  1  0.901  0.837  0.750  1.0
  O  O24  1  0.104  0.666  0.995  1.0
  O  O25  1  0.396  0.666  0.995  1.0
  O  O26  1  0.104  0.665  0.501  1.0
  O  O27  1  0.396  0.665  0.501  1.0
[/CIF]
.
The crystal structure described by Cd(CoO2)2 crystallizes in the monoclinic P2_1/m space group. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form CoO6 octahedra that share corners with three equivalent Cd(2)O6 pentagonal pyramids, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, and  an edgeedge with one Cd(2)O6 pentagonal pyramid. In the second Co site, Co(2) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form CoO6 octahedra that share edges with two equivalent Co(3)O6 octahedra, edges with four equivalent Co(1)O6 octahedra, and edges with two equivalent Cd(2)O6 pentagonal pyramids. In the third Co site, Co(3) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form CoO6 octahedra that share edges with two equivalent Co(2)O6 octahedra, edges with four equivalent Co(1)O6 octahedra, and edges with two equivalent Cd(2)O6 pentagonal pyramids. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. In the second Cd site, Cd(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted CdO6 pentagonal pyramids that share corners with six equivalent Co(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, and edges with two equivalent Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-18°. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Co(2), two equivalent Co(1), one Cd(1), and one Cd(2) atom to form OCd2Co3 trigonal bipyramids that share  a cornercorner with one O(1)Cd2Co3 trigonal bipyramid, corners with four equivalent O(2)Cd2Co3 trigonal bipyramids, corners with two equivalent O(4)CdCo3 trigonal pyramids, edges with two equivalent O(1)Cd2Co3 trigonal bipyramids, edges with two equivalent O(2)Cd2Co3 trigonal bipyramids, and edges with two equivalent O(4)CdCo3 trigonal pyramids. In the second O site, O(2) is bonded to one Co(3), two equivalent Co(1), one Cd(1), and one Cd(2) atom to form OCd2Co3 trigonal bipyramids that share  a cornercorner with one O(2)Cd2Co3 trigonal bipyramid, corners with four equivalent O(1)Cd2Co3 trigonal bipyramids, corners with two equivalent O(4)CdCo3 trigonal pyramids, edges with two equivalent O(1)Cd2Co3 trigonal bipyramids, edges with two equivalent O(2)Cd2Co3 trigonal bipyramids, and edges with two equivalent O(4)CdCo3 trigonal pyramids. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Co(1), one Co(2), one Co(3), and one Cd(2) atom. In the fourth O site, O(4) is bonded to one Co(1), one Co(2), one Co(3), and one Cd(1) atom to form OCdCo3 trigonal pyramids that share corners with two equivalent O(1)Cd2Co3 trigonal bipyramids, corners with two equivalent O(2)Cd2Co3 trigonal bipyramids, corners with three equivalent O(4)CdCo3 trigonal pyramids, edges with two equivalent O(1)Cd2Co3 trigonal bipyramids, and edges with two equivalent O(2)Cd2Co3 trigonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cd(CoO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.997
_cell_length_b   5.115
_cell_length_c   5.955
_cell_angle_alpha   89.929
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   334.981
_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
  Cd  Cd0  1  0.250  0.475  0.744  1.0
  Cd  Cd1  1  0.750  0.147  0.754  1.0
  Cd  Cd2  1  0.250  0.853  0.246  1.0
  Cd  Cd3  1  0.750  0.525  0.256  1.0
  Co  Co4  1  0.015  0.489  0.250  1.0
  Co  Co5  1  0.985  0.511  0.750  1.0
  Co  Co6  1  0.485  0.489  0.250  1.0
  Co  Co7  1  0.515  0.511  0.750  1.0
  Co  Co8  1  0.000  0.000  0.000  1.0
  Co  Co9  1  0.500  0.000  0.000  1.0
  Co  Co10  1  0.000  0.000  0.500  1.0
  Co  Co11  1  0.500  0.000  0.500  1.0
  O  O12  1  0.896  0.334  0.005  1.0
  O  O13  1  0.604  0.334  0.005  1.0
  O  O14  1  0.604  0.335  0.499  1.0
  O  O15  1  0.896  0.335  0.499  1.0
  O  O16  1  0.099  0.163  0.250  1.0
  O  O17  1  0.401  0.163  0.250  1.0
  O  O18  1  0.088  0.177  0.749  1.0
  O  O19  1  0.412  0.177  0.749  1.0
  O  O20  1  0.588  0.823  0.251  1.0
  O  O21  1  0.912  0.823  0.251  1.0
  O  O22  1  0.599  0.837  0.750  1.0
  O  O23  1  0.901  0.837  0.750  1.0
  O  O24  1  0.104  0.666  0.995  1.0
  O  O25  1  0.396  0.666  0.995  1.0
  O  O26  1  0.104  0.665  0.501  1.0
  O  O27  1  0.396  0.665  0.501  1.0
[/CIF]
.