The structure described by MgCd2(Cu2O3)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one O(1), one O(3), and two equivalent O(5) atoms. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a linear geometry to one O(1) and one O(5) atom. In the second Cu site, Cu(2) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(2), and two equivalent O(6) atoms. In the third Cu site, Cu(3) is bonded in a rectangular see-saw-like geometry to one O(4), one O(6), and two equivalent O(2) atoms. In the fourth Cu site, Cu(4) is bonded in a 4-coordinate geometry to one O(4), one O(5), and two equivalent O(3) atoms. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form a mixture of distorted edge and corner-sharing CdO6 octahedra. The corner-sharing octahedral tilt angles are 36°. In the second Cd site, Cd(2) is bonded in a 3-coordinate geometry to one O(1) and two equivalent O(6) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Mg(1), one Cu(1), one Cu(2), and one Cd(2) atom. In the second O site, O(2) is bonded to one Cu(2), two equivalent Cu(3), and two equivalent Cd(1) atoms to form distorted OCd2Cu3 trigonal bipyramids that share corners with two equivalent O(3)MgCd2Cu2 square pyramids, corners with two equivalent O(4)Cd2Cu2 tetrahedra, corners with four equivalent O(2)Cd2Cu3 trigonal bipyramids,  an edgeedge with one O(3)MgCd2Cu2 square pyramid, edges with two equivalent O(4)Cd2Cu2 tetrahedra, and edges with two equivalent O(6)Cd2Cu3 trigonal bipyramids. In the third O site, O(3) is bonded to one Mg(1), two equivalent Cu(4), and two equivalent Cd(1) atoms to form distorted OMgCd2Cu2 square pyramids that share corners with four equivalent O(3)MgCd2Cu2 square pyramids, corners with two equivalent O(4)Cd2Cu2 tetrahedra, corners with two equivalent O(2)Cd2Cu3 trigonal bipyramids, edges with two equivalent O(4)Cd2Cu2 tetrahedra, and  an edgeedge with one O(2)Cd2Cu3 trigonal bipyramid. In the fourth O site, O(4) is bonded to one Cu(3), one Cu(4), and two equivalent Cd(1) atoms to form distorted OCd2Cu2 tetrahedra that share corners with two equivalent O(3)MgCd2Cu2 square pyramids, corners with two equivalent O(4)Cd2Cu2 tetrahedra,  a cornercorner with one O(6)Cd2Cu3 trigonal bipyramid, corners with two equivalent O(2)Cd2Cu3 trigonal bipyramids, edges with two equivalent O(3)MgCd2Cu2 square pyramids, and edges with two equivalent O(2)Cd2Cu3 trigonal bipyramids. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Mg(1), one Cu(1), and one Cu(4) atom. In the sixth O site, O(6) is bonded to one Cu(3), two equivalent Cu(2), and two equivalent Cd(2) atoms to form distorted OCd2Cu3 trigonal bipyramids that share  a cornercorner with one O(4)Cd2Cu2 tetrahedra, corners with four equivalent O(6)Cd2Cu3 trigonal bipyramids, and edges with two equivalent O(2)Cd2Cu3 trigonal bipyramids. is represented by the CIF file [CIF]
data_MgCd2(Cu2O3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.421
_cell_length_b   10.514
_cell_length_c   3.572
_cell_angle_alpha   82.724
_cell_angle_beta   94.959
_cell_angle_gamma   89.759
_symmetry_Int_Tables_number   1
_cell_volume   164.076
_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  0.048  0.548  0.531  1.0
  Cd  Cd1  1  0.183  0.237  0.370  1.0
  Cd  Cd2  1  0.800  0.805  0.700  1.0
  Cu  Cu3  1  0.497  0.649  0.164  1.0
  Cu  Cu4  1  0.235  0.912  0.175  1.0
  Cu  Cu5  1  0.709  0.094  0.905  1.0
  Cu  Cu6  1  0.682  0.386  0.855  1.0
  O  O7  1  0.225  0.731  0.423  1.0
  O  O8  1  0.206  0.085  0.947  1.0
  O  O9  1  0.224  0.390  0.819  1.0
  O  O10  1  0.694  0.246  0.569  1.0
  O  O11  1  0.804  0.558  0.002  1.0
  O  O12  1  0.709  0.922  0.147  1.0
[/CIF]
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The structure described by MgCd2(Cu2O3)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one O(1), one O(3), and two equivalent O(5) atoms. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a linear geometry to one O(1) and one O(5) atom. In the second Cu site, Cu(2) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(2), and two equivalent O(6) atoms. In the third Cu site, Cu(3) is bonded in a rectangular see-saw-like geometry to one O(4), one O(6), and two equivalent O(2) atoms. In the fourth Cu site, Cu(4) is bonded in a 4-coordinate geometry to one O(4), one O(5), and two equivalent O(3) atoms. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form a mixture of distorted edge and corner-sharing CdO6 octahedra. The corner-sharing octahedral tilt angles are 36°. In the second Cd site, Cd(2) is bonded in a 3-coordinate geometry to one O(1) and two equivalent O(6) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Mg(1), one Cu(1), one Cu(2), and one Cd(2) atom. In the second O site, O(2) is bonded to one Cu(2), two equivalent Cu(3), and two equivalent Cd(1) atoms to form distorted OCd2Cu3 trigonal bipyramids that share corners with two equivalent O(3)MgCd2Cu2 square pyramids, corners with two equivalent O(4)Cd2Cu2 tetrahedra, corners with four equivalent O(2)Cd2Cu3 trigonal bipyramids,  an edgeedge with one O(3)MgCd2Cu2 square pyramid, edges with two equivalent O(4)Cd2Cu2 tetrahedra, and edges with two equivalent O(6)Cd2Cu3 trigonal bipyramids. In the third O site, O(3) is bonded to one Mg(1), two equivalent Cu(4), and two equivalent Cd(1) atoms to form distorted OMgCd2Cu2 square pyramids that share corners with four equivalent O(3)MgCd2Cu2 square pyramids, corners with two equivalent O(4)Cd2Cu2 tetrahedra, corners with two equivalent O(2)Cd2Cu3 trigonal bipyramids, edges with two equivalent O(4)Cd2Cu2 tetrahedra, and  an edgeedge with one O(2)Cd2Cu3 trigonal bipyramid. In the fourth O site, O(4) is bonded to one Cu(3), one Cu(4), and two equivalent Cd(1) atoms to form distorted OCd2Cu2 tetrahedra that share corners with two equivalent O(3)MgCd2Cu2 square pyramids, corners with two equivalent O(4)Cd2Cu2 tetrahedra,  a cornercorner with one O(6)Cd2Cu3 trigonal bipyramid, corners with two equivalent O(2)Cd2Cu3 trigonal bipyramids, edges with two equivalent O(3)MgCd2Cu2 square pyramids, and edges with two equivalent O(2)Cd2Cu3 trigonal bipyramids. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Mg(1), one Cu(1), and one Cu(4) atom. In the sixth O site, O(6) is bonded to one Cu(3), two equivalent Cu(2), and two equivalent Cd(2) atoms to form distorted OCd2Cu3 trigonal bipyramids that share  a cornercorner with one O(4)Cd2Cu2 tetrahedra, corners with four equivalent O(6)Cd2Cu3 trigonal bipyramids, and edges with two equivalent O(2)Cd2Cu3 trigonal bipyramids. is represented by the CIF file [CIF]
data_MgCd2(Cu2O3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.421
_cell_length_b   10.514
_cell_length_c   3.572
_cell_angle_alpha   82.724
_cell_angle_beta   94.959
_cell_angle_gamma   89.759
_symmetry_Int_Tables_number   1
_cell_volume   164.076
_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  0.048  0.548  0.531  1.0
  Cd  Cd1  1  0.183  0.237  0.370  1.0
  Cd  Cd2  1  0.800  0.805  0.700  1.0
  Cu  Cu3  1  0.497  0.649  0.164  1.0
  Cu  Cu4  1  0.235  0.912  0.175  1.0
  Cu  Cu5  1  0.709  0.094  0.905  1.0
  Cu  Cu6  1  0.682  0.386  0.855  1.0
  O  O7  1  0.225  0.731  0.423  1.0
  O  O8  1  0.206  0.085  0.947  1.0
  O  O9  1  0.224  0.390  0.819  1.0
  O  O10  1  0.694  0.246  0.569  1.0
  O  O11  1  0.804  0.558  0.002  1.0
  O  O12  1  0.709  0.922  0.147  1.0
[/CIF]
.