The crystal structure described by MgCd2(CoO2)4 is Aluminum carbonitride-derived structured and crystallizes in the orthorhombic Imm2 space group. Mg(1) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form distorted MgO4 tetrahedra that share corners with six equivalent Co(2)O6 octahedra, corners with two equivalent Cd(2)O4 tetrahedra, and  an edgeedge with one Cd(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 29-58°. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(1), and two equivalent O(2) atoms. In the second Co site, Co(2) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form CoO6 octahedra that share corners with three equivalent Mg(1)O4 tetrahedra, corners with three equivalent Cd(1)O4 tetrahedra, corners with three equivalent Cd(2)O4 tetrahedra, and edges with two equivalent Co(2)O6 octahedra. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form distorted CdO4 tetrahedra that share corners with six equivalent Co(2)O6 octahedra and  an edgeedge with one Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 60-70°. In the second Cd site, Cd(2) is bonded to two equivalent O(2) and two equivalent O(4) atoms to form CdO4 tetrahedra that share corners with six equivalent Co(2)O6 octahedra and corners with two equivalent Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 59-66°. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Co(2), two equivalent Co(1), and one Cd(1) atom to form OCdCo3 tetrahedra that share  a cornercorner with one O(1)CdCo3 tetrahedra, corners with four equivalent O(4)CdCo3 tetrahedra, corners with five equivalent O(2)MgCdCo3 trigonal bipyramids, and  an edgeedge with one O(1)CdCo3 tetrahedra. In the second O site, O(2) is bonded to one Mg(1), one Co(2), two equivalent Co(1), and one Cd(2) atom to form distorted OMgCdCo3 trigonal bipyramids that share corners with two equivalent O(4)CdCo3 tetrahedra, corners with five equivalent O(1)CdCo3 tetrahedra,  a cornercorner with one O(2)MgCdCo3 trigonal bipyramid, edges with two equivalent O(4)CdCo3 tetrahedra, and  a faceface with one O(2)MgCdCo3 trigonal bipyramid. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Mg(1), two equivalent Co(2), and one Cd(1) atom. In the fourth O site, O(4) is bonded to one Co(1), two equivalent Co(2), and one Cd(2) atom to form distorted OCdCo3 tetrahedra that share  a cornercorner with one O(4)CdCo3 tetrahedra, corners with four equivalent O(1)CdCo3 tetrahedra, corners with two equivalent O(2)MgCdCo3 trigonal bipyramids,  an edgeedge with one O(4)CdCo3 tetrahedra, and edges with two equivalent O(2)MgCdCo3 trigonal bipyramids. is represented by the CIF card [CIF]
data_MgCd2(CoO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.021
_cell_length_b   6.334
_cell_length_c   6.226
_cell_angle_alpha   60.561
_cell_angle_beta   90.000
_cell_angle_gamma   118.377
_symmetry_Int_Tables_number   1
_cell_volume   173.294
_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
  Mg  Mg0  1  0.774  0.547  0.226  1.0
  Cd  Cd1  1  0.065  0.129  0.935  1.0
  Cd  Cd2  1  0.719  0.439  0.781  1.0
  Co  Co3  1  0.304  0.170  0.415  1.0
  Co  Co4  1  0.866  0.170  0.415  1.0
  Co  Co5  1  0.377  0.755  0.371  1.0
  Co  Co6  1  0.377  0.755  0.875  1.0
  O  O7  1  0.169  0.338  0.127  1.0
  O  O8  1  0.593  0.186  0.201  1.0
  O  O9  1  0.609  0.776  0.112  1.0
  O  O10  1  0.167  0.776  0.112  1.0
  O  O11  1  0.593  0.186  0.613  1.0
  O  O12  1  0.169  0.338  0.535  1.0
  O  O13  1  0.162  0.739  0.631  1.0
  O  O14  1  0.577  0.739  0.631  1.0
[/CIF]
.
The crystal structure described by MgCd2(CoO2)4 is Aluminum carbonitride-derived structured and crystallizes in the orthorhombic Imm2 space group. Mg(1) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form distorted MgO4 tetrahedra that share corners with six equivalent Co(2)O6 octahedra, corners with two equivalent Cd(2)O4 tetrahedra, and  an edgeedge with one Cd(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 29-58°. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(1), and two equivalent O(2) atoms. In the second Co site, Co(2) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form CoO6 octahedra that share corners with three equivalent Mg(1)O4 tetrahedra, corners with three equivalent Cd(1)O4 tetrahedra, corners with three equivalent Cd(2)O4 tetrahedra, and edges with two equivalent Co(2)O6 octahedra. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form distorted CdO4 tetrahedra that share corners with six equivalent Co(2)O6 octahedra and  an edgeedge with one Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 60-70°. In the second Cd site, Cd(2) is bonded to two equivalent O(2) and two equivalent O(4) atoms to form CdO4 tetrahedra that share corners with six equivalent Co(2)O6 octahedra and corners with two equivalent Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 59-66°. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Co(2), two equivalent Co(1), and one Cd(1) atom to form OCdCo3 tetrahedra that share  a cornercorner with one O(1)CdCo3 tetrahedra, corners with four equivalent O(4)CdCo3 tetrahedra, corners with five equivalent O(2)MgCdCo3 trigonal bipyramids, and  an edgeedge with one O(1)CdCo3 tetrahedra. In the second O site, O(2) is bonded to one Mg(1), one Co(2), two equivalent Co(1), and one Cd(2) atom to form distorted OMgCdCo3 trigonal bipyramids that share corners with two equivalent O(4)CdCo3 tetrahedra, corners with five equivalent O(1)CdCo3 tetrahedra,  a cornercorner with one O(2)MgCdCo3 trigonal bipyramid, edges with two equivalent O(4)CdCo3 tetrahedra, and  a faceface with one O(2)MgCdCo3 trigonal bipyramid. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Mg(1), two equivalent Co(2), and one Cd(1) atom. In the fourth O site, O(4) is bonded to one Co(1), two equivalent Co(2), and one Cd(2) atom to form distorted OCdCo3 tetrahedra that share  a cornercorner with one O(4)CdCo3 tetrahedra, corners with four equivalent O(1)CdCo3 tetrahedra, corners with two equivalent O(2)MgCdCo3 trigonal bipyramids,  an edgeedge with one O(4)CdCo3 tetrahedra, and edges with two equivalent O(2)MgCdCo3 trigonal bipyramids. is represented by the CIF card [CIF]
data_MgCd2(CoO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.021
_cell_length_b   6.334
_cell_length_c   6.226
_cell_angle_alpha   60.561
_cell_angle_beta   90.000
_cell_angle_gamma   118.377
_symmetry_Int_Tables_number   1
_cell_volume   173.294
_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
  Mg  Mg0  1  0.774  0.547  0.226  1.0
  Cd  Cd1  1  0.065  0.129  0.935  1.0
  Cd  Cd2  1  0.719  0.439  0.781  1.0
  Co  Co3  1  0.304  0.170  0.415  1.0
  Co  Co4  1  0.866  0.170  0.415  1.0
  Co  Co5  1  0.377  0.755  0.371  1.0
  Co  Co6  1  0.377  0.755  0.875  1.0
  O  O7  1  0.169  0.338  0.127  1.0
  O  O8  1  0.593  0.186  0.201  1.0
  O  O9  1  0.609  0.776  0.112  1.0
  O  O10  1  0.167  0.776  0.112  1.0
  O  O11  1  0.593  0.186  0.613  1.0
  O  O12  1  0.169  0.338  0.535  1.0
  O  O13  1  0.162  0.739  0.631  1.0
  O  O14  1  0.577  0.739  0.631  1.0
[/CIF]
.